Diesel Fuel Quality

A diesel fuel’s cetane rating tells you the ignition quality of the solution — the higher the cetane rating, the easier commercial trucks can start cold. Choosing 1-D fuel gives you more cetane within the mixture, which ends up leaving less room for wear and tear on engine batteries.

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Emergency Back-up Fuel 1024 683 Star Oilco

Emergency Back-up Fuel

Do you need your Emergency Back Up generator filled with diesel?

We deliver dyed diesel and will keep your equipment full for you.

When the Power goes out, we have diesel ready to keep your back up generator fueled.  We can also set up automatic fueling and DEF top off service with confirmation for your facility team’s needs. Whether you want long term stabilized diesel, dyed renewable diesel, or B20 biodiesel blends we have you covered with your fuel specification needs.

Back-up Fuel Tank

We have drivers on the road today with diesel.

When was the last time you had your generator filled with stabilized diesel?  We deliver off road diesel treated for long term storage.

Open an account with Star Oilco today and prepare for the next power outage.

Recent heat waves might have caused power outages.  Make sure your generators are full for this winter now.

Are you prepared for the next emergency? Have you filled up since the last time?  Keeping your back-up generator fueled could be the difference between an inconvenience and a disaster.  Stay ahead of the next emergency and re-fuel now.

Remember that ordering diesel for your generator is a specialized service, we will make it easy for you.

Getting the fuel for your generator or emergency equipment is only one part of the problem.  How you store it can be just as important.  This is why its important to work with a company that can help you.

You want to stabilize and treat your diesel for generators and other back up equipment.

Order fuel treated for long term storage!

Star Oilco is an expert at fueling back-up generators, emergency water pumps, and other long term off-road diesel storage requirements. We understand, that in the Pacific Northwest, biodiesel blending is required by state laws. Biodiesel needs an extra layer of care when stored as a back-up fuel.Filling a Generator in the Snow

Most off-road diesels and heating oils are ultra low sulfur diesel containing at least 5% quantity of biodiesel.  This means long term storage requires a proactive approach.  You can’t just hope it works, or wait to see if the fuel will burn after years of storage.

Proper Generator Fuel is a specially treated oxidative stabilized off-road fuel designed to store for years.

Fueling a backup generator is a specialized product. The fueling service requires a vendor who understands your needs and keeps you up and running in an emergency.

Generators take off-road diesel, of course, but you want an ultra low sulfur diesel to ensure it works with modern emission systems. Some companies deliver higher sulfur product that look the same but foul the emission systems of your equipment.

Beyond the service provided, you also want a vendor who offers a fuel stabilizer and biocide for the special long term storage needs of your backup generator. Star Oilco recommends you add a biocide and long term storage stabilizer to your fuel to ensure it is good whenever you need it.

Use additives designed to prolong the life of your emergency diesel fuel.

Biocides prevent the growth of biological activity in the tank. In scenarios whcontaminated_dieselere micro-organisms like algae, bacteria, yeasts, and other bugs are growing in your fuel, biocides kill this growth. It is still important to remove the residual grit and other contaminants that are the hallmark of bugs growing in your tank. Usually, turning over the fuel or using a filtration can remove this.

If your tank absolutely has to be clean, you can contract a tank professional to enter the tank and physically clean the tank bottom or reline the tank with either fiberglass or an epoxy resin. We use Valvtect Bioguard Plus 6 for generators, emergency water pumps, backup boiler fuel, and other long term storage purposes. This product kills any existing biological growth and stabilizes your fresh diesel fuel for long term storage. Make sure your diesel is ready the next time you need backup power.

Water in diesel destroys fuel quality rapidly. Check your tank for water every fall and spring.

Pumping the tank bottom removes water if it ever finds its way into your storage tank. Additionally, you want to put in an absorbent material designed to absorb water and not fuel. If your long term storage tank has water and you are not planning to burn 100% of the fuel in the near future, DO NOT add anything that removes water by distributing into the fuel. Adding a “fuel drier” that actually pushes the water into solution with the diesel will worsen the long term quality of your fuel, not improve it. That water is where bugs find their home to grow in fuel.

Star Oilco will test your fuel at no charge if you have an open account.

Feel free to call us with any questions you may have about long term storage of diesel. Star Oil can also deliver treated diesel ready for long term storage complete with Hydrotex PowerKleen Premium Diesel additive to improve the long term storage quality of your fuel. For biocide, we use Valvtect BioGuard fuel microbiocide to kill any possible biological activity and prevent any chance of it starting.

Diesel Testing and Storage in Portland

If you have a long term diesel storage tank and you are in the Portland, Oregon area, we are here to test your fuel.  Make sure your diesel is there for you when disaster strikes.

Tank Testing Form

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For more reading on diesel fuel quality assurance:

Fight Humbug in your Diesel Tank (using Valvtect Bioguard Plus 6 to stabalize your stored diesel)

Diesel Fuel Technical Review (an easy to read and free text book on diesel fuel)

Emergency Back Up Generator Fuel Quality (designed to provide a checklist to help Facility Managers keep those back up generators ready for emergency action)

Using Desicant Breathers to keep diesel fuel dry and clean (an introductory primer on desicant breathers and how they can be used to keep long term diesel storage drier and cleaner)

Using Diesel Filters to clean up your diesel fuel quality (an introductory primer on using aggressive filtration in line with diesel fuel dispensing for fuel quality assurance)

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Understanding The Renewable Fuel Standard In Portland 1024 682 Star Oilco

Understanding The Renewable Fuel Standard In Portland

Diesel Fuel Is Changing In Portland With The Renewable Fuel Standard (RFS)

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Figuring out what this means for you or your business can be challenging. We have shared many questions that we have been asked already, to help provide more clarity on what this Renewable Fuel Standard (RFS) means for Wholesale Purchaser-Consumers​. If your question isn’t listed below, please reach out to Star Oilco so we can make sure your questions are answered!

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What is the Portland's Renewable Fuel Standard?

The Renewable Fuel Standard (RFS) is Portland City Counsel’s response to the City’s 2022-2025 Climate Emergency Workplan, which lists the City’s priority actions over the next three years.​

On Dec. 7, 2022, City Council unanimously adopted amendments to the Renewable Fuel Standard, Portland City Code Chapter 16.60, which reduces dependence on nonrenewable fossil fuels, by increasing the required percentage of renewable fuels blended with petroleum diesel sold in the city of Portland.​

This policy increases low-carbon biofuel blends, moving Portland’s diesel fuel mix to 99% renewable in 2030. This policy includes a carbon intensity standard to shift to fuels that are lower carbon across their entire lifecycle.

What Does The Renewable Fuel Standard Mean For Me?

Portlands Renewable Fuel Standard Requirements

 Starting July 1, 2024, Portland will require that all diesel fuel sold contain a minimum 15% blend of biodiesel or renewable diesel. This percentage will increase steadily over the next few years, reaching a minimum 99% renewable fuel requirement by July 1, 2030.

There are no reporting requirements for retailers to comply with this mandate. Instead, the city will enforce compliance through random on-site inspections and by requiring retailers to maintain records of the biofuel content of the diesel they sell.

Who Does The Renewable Fuel Standard (RFS) Apply To?

  • The policy speaks to “Covered Entities”​
  • Diesel Fuel Transaction within the City of Portland Oregon​
  • Fuel distributors, resellers, retailers, nonretail dealers, terminals, importers and wholesale purchaser-consumers are directly regulated by PCC Chapter 16.60 and referred to as “covered entities.”
  • Wholesale Purchaser-Consumers​: also know as WPCs are directly regulated by PCC Chapter 16.60 and referred to as “covered entities.”​

What Are Considered Wholesale Purchaser-Consumers ?

Wholesale purchaser-consumer (WPC) is a category of entities that own or utilize diesel vehicle fleets and purchase fuel in bulk for delivery into a storage tank at their facility or directly into a vehicles fuel tank. WPCs are required to register with the RFS program.​

A fuel distributor or common carrier delivers on road diesel to your facilities on-site tank such as: ​

  • Bulk Tank​
  • Aboveground Storage Tank (AST)​
  • Underground Storage Tank (UST)​

A fuel distributor delivers on road diesel directly into your vehicles also known as:​

  • On-Site Fleet Fueling​
  • Wet Hose Fueling​

Does The RFS Only Apply To Wholesale Purchaser-Consumers of Diesel Fuel?

Yes, these rules apply to fuel for on-road motor vehicles. Fuels used for the following purposes are not covered by these rules: ​

  1. Railroad locomotives, watercraft, aircraft, and emergency equipment​
  2. Dyed diesel for off-road vehicles​
  3. Dyed diesel for furnaces, boilers, generators​
  4. Propane and liquefied natural gas for vehicles​

What Are The Requirements To Meet The RFS?

Wholesale Purchaser-Consumers are required to meet three primary components of the RFS:​

  1. Biofuel Minimum Content Requirements,​
  2. Carbon Intensity standard,​
  3. Selecting a compliance option, and​
  4. Record keeping.​

What is the biofuel minimum content requirements for Wholesale Purchaser-Consumers ?

Biofuel Minimum Content Requirements for Wholesale Purchaser-Consumers​

  • WPCs in the City of Portland are required to meet the minimum biofuel content requirements for all fuel they purchase for their vehicle fleet. Beginning July 1, 2024, all diesel purchased must include 15% biofuel content, from either renewable diesel or biodiesel. This requirement increases to 50% on July 1, 2026, and 99% on July 1, 2030.​
  • The biofuel content requirements will be enforced through random inspections of fleet facilities to see that they (1) have a contract in place with fuel suppliers that specifies that fuel meets the minimum blend requirements, or (2) verification of actual products purchased through testing or review of product transfer documents.

What is the Carbon Intensity (CI) Standard for Wholesale Purchaser-Consumers ?

  • All WPCs also need to be aware of the Carbon Intensity Standard in PCC Chapter 16.60.​
  • All biodiesel and renewable diesel sold in the City of Portland must have a carbon intensity equal to or less than 40g CO2e/MJ as certified by DEQ’s Clean Fuels Program, Approved Carbon Intensity Values.​
  • Carbon intensity requirements apply to biofuel blendstock, not the final blended products, which may contain a portion of petroleum-based diesel fuel at a higher carbon intensity.​

Selecting a compliance option for Wholesale Purchaser-Consumers​

  • WPCs will need to select a compliance option by the start of the compliance period, July 1, 2024.​
  • Portland Bureau of Planning & Sustainability (BPS) will provide notification about selecting compliance options by May 31, 2024.​
  • To receive notification, covered entities must be registered with the RFS Program. ​

*Compliance option selection may be changed at any time during the compliance period after consulting with BPS. If a covered entity decides to change the compliance option during the compliance period, they are responsible for compliance under the new option for the full compliance period.

Record Keeping Requirements for Wholesale Purchaser-Consumers​

Portland City Code (PCC) Chapter 16.60 and administrative rules requires that an invoice, bill of lading, shipping paper, or other documentation, referred to as “Product Transfer Documents” (PTD) must accompany each fuel delivery in the city of Portland. The administrative rules specify that:​

  1. PTDs must include the type of renewable fuel, including biodiesel, renewable diesel, ethanol, or any blends of these fuels, and declare the volume percent of such renewable fuel.​
  2. PTDs must comply with OAR 603-027-0430 (1) (a) which includes identifying the quantity, the name of the product, the name and address of the seller and buyer, and the date and time of the sale.​
  3. WPCs using the Product Transfer Document compliance pathway must also ensure that fuel pathway codes issued by Oregon Clean Fuels Program are also included on a PTD associated with each delivery received by the WPC or have a contract with a fuel supplier specifying the carbon intensity requirements of PCC Chapter 16.60.​

Contact Us Today To Learn More About The RFS For Your Operations

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Every Question About Off-Road Diesel 1024 768 Star Oilco

Every Question About Off-Road Diesel

Got questions about red dyed diesel? We have answers!

If you don’t find the answer you’re looking for, reach out to us directly and we’d be happy to help answer your questions.

What is red diesel?

Red Diesel is off-road diesel, in the United States this fuel is denoted with a red dye. The dye marks this as fuel for off-road equipment and vehicles and as such it doesn’t have road fuel taxes included in the price.  This dye takes a great deal of clear fuel to dilute so it makes it very obvious if an on-road vehicle has been using off-road untaxed fuel. Tax authorities can and do check for vehicles using off-road red diesel in on-road vehicles. They do this by using a black light to spot any residual presence of dye in the fuel as well as at key places in the engine compartment.

What is green diesel?

On-road diesel is clear or slightly green. Refineries place a green dye into diesel fuel which is obvious if fuel is freshly dispensed into a bottle to observe its color. As fuel ages this dye fades to yellow or darker colors. Part of a visual observation to inspect diesel fuel quality is to check the fuel for a “bright” appearance with the slight green dye being a giveaway that the diesel is fresh and in good condition.

What is dyed diesel?

Nearly all diesel has dye in it. Typically when talking about dyed diesel, we’re referring to a red dye added to off-road diesel. Off-road diesel is normally used for heating oil, construction fueling, agricultural use, and other off-road equipment not used on the highway system where fuel taxes would be required by law.

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Why is diesel dyed?

Diesel is dyed in order to denote if it has paid road tax or not. On-road diesel in the United States usually has a light green tint to it. Off-road diesel has a red dye to denote it has not paid road taxes as required by all states and the Federal government.

What is off-road diesel?

Off-road diesel is diesel fuel dyed red to show it is untaxed and available only for off-road fuel uses such as construction fueling, equipment never used on a public road, agricultural use, heating oil, boiler fuel, and other non-taxed diesel fuel uses under state and Federal fuel tax law. In Oregon, with proper paperwork, some off-road uses can buy on-road fuel with the Oregon state tax exemption.

What is farm diesel?

Farm or diesel for agricultural use is off-road diesel that is not charged on-road fuel taxes. Agricultural use fuel is a tax-exempt use of diesel fuel. If diesel is burned on a farm and can be tracked for such, taxes can be avoided. Farms are allowed to receive clear diesel without road taxes charged on it in Oregon. Often it is dyed red to denote it is tax free. In Oregon, where P.U.C. for trucks over 26,000 GVW pay a weight mile tax instead of a per gallon state road tax, some farms will track their use of clear diesel so they can file for Federal road taxes on off-road usage.

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What color is dyed diesel?

All diesel sold in the United States typically has some dye in it. On-road diesel usually has a slight green tint to it. This is a dye added by either the refiner or terminal provider with the fuel. Off road diesels are dyed red to denote that the fuel is untaxed and is for use in off-road purposes only.

What is the red dye used to turn off-road diesel red?

Solvent Red 26 and Solvent Red 164 are the allowed dyes prescribed by the United States Internal Revenue Service for marking diesel as for un-taxed off-road use only.

Is dyed or off-road diesel flammable?

Off-road diesel is classified as a Class II combustible liquid by the National Fire Code. A flammable fuel is one with a flash point below 100 degrees F. Diesel’s flash point is between 126 and 205 degrees F (typically assumed to be about 160 degrees F).  That classifies it as a Class II combustible.

What is the difference between off-road diesel and on-road diesel?

Fuel taxes charged is the big difference between the two fuels. All on-road diesel is clear or greenish in color to denote it is both ultra-low sulfur diesel and the on-road fuel taxes associated with using it to power a highway vehicle have been paid. Dyed fuel means that fuel taxes are not paid and that the fuel can not be used to power a vehicle on a public road.

Is off-road diesel or dyed diesel high sulfur diesel?

Dyed diesel (or off-road diesel) can be high sulfur fuel. High sulfur diesel is defined as diesel fuel with over 500 parts per million of sulfur content.

Is off-road diesel or dyed diesel ultra-low sulfur diesel?

Off-road and dyed diesel fuels can be ultra-low sulfur but are not guaranteed to be. There has been a consistent push to reduce sulfur in all fuels in the United States as led by EPA regulation. In recent years, EPA standards require off-road construction and agricultural equipment to have an emissions system that allow ultra-low sulfur to operate without major problems. So today’s off-road diesel being delivered is ultra-low sulfur. If you have a tank with old stored dyed red diesel fuel in it, you can assume it has a higher than ultra-low sulfur content.

What is dyed ULSD fuel?

Dyed ULSD fuel is ultra-low sulfur diesel with a red dye in it to denote that it is for off-road or untaxed purposes only. These purposes are typically for heating oil, construction fuel, agricultural fuel, generator fuel or other off-road uses. The “ULSD” is an acronym for ultra-low sulfur diesel.

Is dyed diesel #1 or # 2 diesel?

Dyed diesel can be either #1 or #2 diesel. Both fuels require a red dye in them to confirm they are untaxed and cannot be used for on road fuels.

Is dyed diesel and off-road diesel kerosene?

Dyed diesel and off-road diesel can be kerosene (which crosses as #1 diesel fuel), but not necessarily. Do not assume a dyed fuel is kerosene, which is a rarer fuel. Kerosene is different than #1 diesel for one characteristic: its confirmed ability to be absorbed and taken up by a wick. All kerosene is #1 diesel.  Not all #1 diesel fuels are kerosene. The same goes for dyed diesels and off-road fuels. All dyed kerosene is dyed and off-road diesel. Not all dyed fuel is kerosene.

Is dyed diesel and off-road diesel stove oil?

Yes, dyed diesel and off-road diesel are stove oil. Typically a #1 stove oil or #2 stove oil, similar to diesel. Historically stove oils had a slightly different set of specification concerns which is why they were called “stove oils” versus diesel. When petroleum refineries distilled crude oils to get diesel range fuels, it was less exact than it is today with hydrocracking technology. Today with both oil refinery technologies and the EPA emission regulations, the number of distillate range fuel specifications is far more consolidated in order to ensure compliance with EPA and state rules. If your heating appliance is demanding stove oil, it typically needs a #1 stove oil or #1 kerosene product. This product is expected to produce less soot and therefore to work better in a pot stove type of application. The most modern stove oil appliance in the U.S. are Monitor and Toyostove thermostatically controlled direct vent heaters.

Is off-road diesel bad for my truck?

Depends on the year of your truck, and we assume you mean red dyed diesel fuel.  First, using dyed diesel, off road diesel, or heating oil in an on-road vehicle is against the law.  If you are caught in Oregon the fine can be as big as $10,000 and the State of Oregon does aggressively pursue this type of tax avoidance.  Beyond the legal use of off-road fuel.  Typically on the west coast dyed diesel is ultra low sulfur diesel. Which means it will not cause maintenance issues if burned in your engine.  Dependent on the age of the dyed fuel, or if it is actually a heating oil, it might be high sulfur or low sulfur fuel. If you use that in a post 2007 engine with a particulate trap it will have serious maintenance issues if you use that fuel.

Is dyed diesel or off-road diesel heating oil?

Yes, dyed diesel and off-road diesel are acceptably used as heating oil. Dyed diesel and off-road diesel these days are typically ultra-low sulfur diesel. Heating oil can be low sulfur or high sulfur in content under EPA and most state laws. So heating oil sometimes cannot be dyed diesel (when used for off-road equipment or agricultural use) but dyed/off-road diesel can always be used for heating oil and conform to the necessary specification required by heating oil furnaces.

Does off-road diesel have sulfur in it?

Yes! But in today’s ultra-low sulfur market, most off-road diesel is below 15 parts per million. If your equipment requires ultra-low sulfur diesel, it is a good practice to confirm that is what fuel you are getting. Some low sulfur diesel (under 500 parts per million sulfur fuel) and high sulfur diesel (over 500 parts per million sulfur) is still in the marketplace used by heating oil, boiler systems, locomotive, and marine applications.

Does off-road diesel freeze?

Off-road diesel gels at cold temperatures. At colder temperatures, wax crystals begin to form and fall out of the diesel, clogging filters and gelling up the fuel. Also, the water and naturally held-in diesel will ice up and obstruct filters. This phenomenon is called diesel gelling.

Does off-road diesel gel in cold weather?

All diesel fuels will gel if it gets cold enough. Both a formation of wax crystals and ice forming in your fuel will obstruct filters and take your equipment down. Rule of thumb: with no treatment your diesel fuel should operate without any issues above 20 degrees Fahrenheit. Below 20 degrees Fahrenheit, you will want to ensure your vendor is treating the fuel for winter use to ensure it will operate down to -20 degrees Fahrenheit.  If you are facing temperatures below that, you will want to confirm with your vendor that they are testing that fuel to operate below -20 degrees Fahrenheit.

Why does the government require diesel be dyed red?

From a informational pamphlet from the US IRS on untaxed fuel: 

“The federal government requires dyeing of untaxed diesel fuel and kerosene for two reasons. To help reduce tax evasion by identifying fuel on which excise taxes have not been paid, and to help reduce air pollution by identifying fuel not suitable for use in highway vehicles.”

Does off-road diesel go bad?

Off-road and dyed diesel do age and can go bad. All diesel fuels adhering to ASTM specification should be safe for storage up to a year without additional treatment and testing. If you are storing diesel for long term use, it is a good best practice to treat the fuel with a biocide and oxidative stabilizer to ensure that the fuel stays within specification and nothing will begin to grow in your fuel tank. The biggest enemy of long term diesel storage is water and dirt entering the fuel through a tank vent. As temperatures change a tank will breath pulling in air and moisture from outside. Ensuring there is no water in the tank and that outside contaminants can’t get into a tank are how keep your fuel within specification.

How long can I store off-road or dyed diesel in a fuel tank?

Untreated, you can assume that diesel fuel is good for a year. If treated with a biocide to prevent biological growth from growing in the tank, you can expect diesel to be good for two to three years. After two to three years, diesel begins to show age as it loses its brightness when sampled. After three years you will want to sample and test the fuel to ensure it is within specification for reliable use.

What are the fuel taxes on off-road diesel?

Fuel taxes vary by state and sometimes even local municipality. With off-road diesel, usually the only taxes to consider are sales taxes on the fuel. In Oregon there are no taxes on dyed off-road fuel. In Washington state there are sales taxes for dyed-diesel charged on top of the sale price of the fuel. (NOTE: If you use clear diesel in Washington state there is no sales tax as the road tax is being charged.)  If you are curious for a more in depth answer Star Oilco has a full explanation of Oregon Diesel Taxes (a unique system in the United States for local fuel tax collection of trucks over 26,000 GVW).

Do you pay sales tax on dyed diesel or off-road diesel in Washington state?

Yes. If you are consuming dyed diesel and are not paying for the on-road fuel taxes in Washington state, the sales tax is charged. If you use clear fuel with road taxes attached to the fuel, the sales tax is not charged. For more on Washington fuel taxes see the Washington Department of Revenue. 

What are the taxes on dyed diesel or off-road diesel in Oregon state?

Your petroleum distributor has some small taxes (under $.01) attached to the fuel they buy at the wholesale terminal level. Those taxes being the U.S. EPA Superfund cleanup and the “LUST” or Leaking Underground Storage Tank cleanup fund. Beyond that, there are no taxes (Federal, state or local municipality) on fuel used for off-road diesel in Oregon state.

Is there a way to buy clear diesel without a road tax on it?

In Oregon you can buy clear fuel exempt of Oregon’s state road taxes. The qualifications for using clear diesel Oregon State tax exempt are the following: 

vehicles issued a valid ODOT Motor Carrier permit or pass (weight receipt) 

vehicles issued a valid Use Fuel User emblem by the ODOT Fuels Tax Group 

vehicles registered to a US government agency, Oregon state agency, Oregon county or city, and displays a valid Oregon “E” plate 

vehicles, or farm tractors/equipment only incidentally operated on the highway as defined in ORS 319.520 

vehicles or equipment that are unlicensed and/or used exclusively on privately owned property 

What happens if I use dyed diesel in an on-road vehicle?

If you get caught in Oregon, a $10,000 a day fine can be levied. We have seen fuel tax cheats get caught repeatedly so be aware Oregon is on the look out for any amount of dye in the saddle tank of an on-road vehicle. If the fuel you use is low sulfur or high sulfur fuel and your vehicle has a particulate trap, you will have maintenance issues with the emission system of your vehicle.

Can you use dyed diesel in a diesel pickup truck?

Only if that pickup is dedicated to an off-road use. If you plan to ever use that truck on a public road (even to cross a street), and dyed fuel is found in that vehicle, fines up to $10,000 per occurrence can (and are) levied by state regulators. If you have a closed facility or large farm and are not registering the vehicle for on-road use (so the pickup must not leave the site), you can use off-road diesel as the vehicle’s fuel. If you have license plates and it’s permitted for on-road use, any regulator spotting dyed fuel in that truck will presume it is an on-road pickup.

How does the government test if someone used dyed diesel?

Typically when checking for illegal use of dyed fuel, regulators will sample from the tank or spin the fuel filter and observe for obvious dyed fuel. If the fuel is clear (or even slightly pink) and they suspect dyed fuel was used in the vehicle, they can apply a special black light that will glow an obvious color denoting dyed fuel had been in contact with the vehicle. They will shine that light on the filter, fuel tanks, and various parts in the engine compartment that would have come into contact with the fuel. If those areas denote even a mild trace of the red-dye used in off-road diesel, they will cite the vehicle operator. There are kits sold online for filtering dye out of fuel to remove the color.  Those kits will not remove enough dye to avoid detection by these lights.

Why is off road diesel illegal for pick up trucks to use?

Off road diesel is dyed red to show that the on-road fuel taxes are not paid or that it is a tax-free fuel.  The Federal Government and State Government’s have fuel taxes for on-road fuel usage to help pay for the roads we all drive on.  If you are using diesel for a non-road equipment, machinery, or heating/boiler applications the fuel taxes are exempt and the fuel is dyed to ensure it’s tax free status is immediately seen.  Regulators in a road side or site level inspection can also shine a black light on specific places in a vehicles system to denote if dyed fuel is being used in violation of the law as well.

What is the difference between dyed diesel and heating oil?

In the Pacific Northwest at the current moment? Usually nothing. Heating oil is dyed diesel. Most petroleum distributors are selling the mainstream dyed diesel specification for use as heating oil in order to lower the overall cost of the fuel. There are different ASTM specifications for heating oil and dyed diesel dependent on the state you buy it in. Heating oil’s specification has wider tolerances than diesel specifications as furnaces and boilers can handle dirtier, lower quality fuels than off-road equipment with a particulate trap. Heating oil is always a diesel fuel, but sometimes dyed diesel for off-road equipment has a different specification than heating oil. For example, in Oregon a 5% biodiesel or 5% renewable diesel mandate exists for any dyed diesel fuel used in off-road equipment. This biofuel mandate exempts heating oil and boilers. So heating oil can be biodiesel free but off-road diesel for equipment cannot.

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Can refrigerated trailers or “reefers” use dyed diesel even if they are attached to a truck moving it on the highway?

Yes, refrigerated trailers are off-road equipment. The diesel fueled refrigeration trailer is off-road equipment as its engine is not powering something actually driving down the road. These trailers can use any ultra-low sulfur diesel fuel (dyed or clear). If using on-road clear fuel in a refrigerated trailer, if you track and keep proof of the on-road fuel being used in the off-road piece of equipment, you can file for those fuel taxes back. Proof is required though so consult with your CPA or accountant.

How do I order off-road diesel for a construction project?

The first step is to set up an account with Star Oilco. It’s easy to pay through a simple credit application or by placing a credit card on the account. Oregon and Washington are highly regulated when it comes to fuels such as diesel. We need to account for who is ordering and getting fuel (yes, Oregon even checks sometimes as the DEQ tracks every gallon of diesel moving into the state). Determine if you want a loaner tank onsite or a keep-full service plan. Star Oilco will deliver bulk or wet hose fuel your job site on a regular schedule. We are here to make it as easy as possible for you to focus on your project, not fueling. Let us know what you want: we will keep it simple and make it easy for you.

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How do I stop biological growth in my off-road diesel fuel tank?

If you are storing off-road or dyed diesel for longer than six months you will want to make sure it is stabalized. Star Oilco recommends Valvtect Plus Six as the fuel additive you want to use.  Our recommended fuel additive is a fuel microbiocide with stability additives made for diesel long term storage.  This kills and prevents the growth of biological “hum-bugs” in your tank.  Bacteria, yeast, and algae can grow in your fuel tank. Usually in a small amount of water that collects in the bottom of the fuel storage tank (be it the bulk tank you  fuel out of or the saddle tank on your equipment).

How do I get water out of my off-road diesel equipment's fuel tank?

There are several ways to do this.  What you will want to do varies based on how much water and what it is in.  If you are dealing with a large bulk fuel tank you want to definitely pump the tank bottom to get the water out.  If you are seeing extreme biological activity (Hum-Bug growing in your tank) you want to do a kill dose treatment on that tank. It might not be a bad idea to also spend a few thousand dollars to have a professional tank cleaning company come in and manually clean the tank prior to adding the kill dose to kill anything growing in your tank.  If it’s the tank on your equipment usually the best route is to drain the tank, flush the tank, and also put a kill dose of  a fuel microbiocide to make sure nothing continues to grow.  If you want to talk to someone feel free to call Star Oilco, you do not need to be our customer for us to walk through some solutions you can do yourself. 

Where can I buy off-road diesel or dyed diesel?

There are a very few rural gas stations that provide this fuel.  Some Pacific Pride or CFN cardlock locations also have pump available for this fuel.  The easiest way to acquire this fuel is through a fuel company.  Star Oilco is one such company that can deliver dyed diesel for it’s customers, or provide cardlock cards for its customers.

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Powering Through Outages With Backup Generators 1024 1024 Star Oilco

Powering Through Outages With Backup Generators

Backup Generators: How They Work & How They Are Powered  

A backup generator is an essential part of any preparedness plan for your home or business. An outage isn’t a problem when you have a backup generator, they provide you with reliable power when the grid goes down. Backup generators are also reliable and safe to use, so you can have peace of mind knowing that your family or business is protected. They are a good investment for any home or business and can help you stay prepared in the event of a power outage. They are cost-effective, with many models available for affordable prices. They are also easy to install and maintain, making them a great option for those looking for a reliable solution for their home or business.

How Backup Generators Work 

The backup generator converts fuel into electricity. Gasoline, diesel, and natural gas are the most common fuel sources for backup generators. In the event of a power outage, the generator automatically starts up and generates electricity. As a result, lights, appliances, and other equipment in the home or business are powered by this electricity. 

emergency-back-up-fuel-backup-generators

Types of Backup Generators 

Standby generators

These are the most common type of backup generator. They are permanently installed to the home or business’s electrical system and will automatically start up when there is a power outage. Standby generators are a popular choice for homeowners that are just want a reliable source of power during an outage to keep their family warm, keep major appliances running and now let food stored in a freezer go bad. If there’s a sump pump, you’ll also want a backup generator to keep that running.  

Portable generators

These generators are smaller and more portable than standby generators. They can be used to power essential appliances and equipment during an outage. Portable backup generators are handy to have in emergency situations such as storms, floods, and other natural disasters. A portable generator can keep essential appliances like lights, refrigerators, and medical equipment running until the grid is restored. These backup generators can also be handy for outdoor recreation such as camping and RV’ing to provide electricity for lights, appliances, and entertainment devices while enjoying the outdoors. They can also be used for tailgating and outdoor events to power grills, music systems, and other equipment for tailgating parties, backyard weddings, and outdoor movie nights. 

Inverter generators

These generators produce clean power that is safe for sensitive electronics. They are a good choice for homes and businesses with computers, televisions, and other electronic devices. Inverter generators provide a quiet operation, clean power and fuel efficiency. Inverter generators produce a smoother, more stable AC current, similar to what you get from the grid. This is crucial for powering sensitive electronics like laptops, smartphones, and medical equipment without damaging them. These can be a great option for construction sites to provide a clean and stable power for tools and equipment on the construction sites. Mobile businesses such as food trucks and vendors also rely on inverter generators to power their equipment when they’re on the go.

How Backup Generators Are Powered

Gasoline:

Gasoline is the most common fuel for portable generators. It is readily available and relatively inexpensive. Gasoline is easy to use and can be stored for long periods of time. However, it is also highly flammable and can be dangerous if not handled properly. It is also not as efficient as some other fuels, such as diesel or natural gas. 

Diesel:

Diesel fuel is more expensive than gasoline, but it is also more efficient. Diesel generators can run for longer periods of time on a single tank of fuel. Diesel generators are also more reliable and have a longer life span than gasoline generators. Additionally, diesel engines produce lower emissions than gasoline engines. 

Natural gas:

Natural gas is the most convenient fuel for standby generators. It is piped directly into the home or business, so there is no need to store fuel. It is also a relatively clean-burning fuel, producing fewer emissions than other fossil fuels such as coal. Additionally, it is relatively inexpensive compared to other energy sources. 

Choosing a Backup Generator  

The size of the generator:

The size of the generator you need will depend on the amount of electricity you need to power during an outage.  The size of the generator will determine how much power it can provide, so it is important to choose a generator that is large enough to meet your power needs. If the generator is too small, it will not be able to provide enough power to meet your needs during an outage.  

The type of generator:

The type of generator you need will depend on your individual needs. For example, if you have a lot of sensitive electronics, you will need an inverter generator. Inverter generators are more lightweight and produce less noise than traditional generators. They are also more efficient and can provide more power than traditional generators. 

The fuel source:

The fuel source you choose will depend on your availability and budget. Different fuel types have different advantages and disadvantages. Diesel and propane generators are more reliable than gasoline generators, but gasoline generators are cheaper and easier to transport. 

The location of the generator: 

Make sure the generator is located in a safe area away from any potential hazards. The generator should also be positioned in such a way that it cannot be affected by wind or rain. The generator should be regularly checked and maintained to ensure it is working properly. 

Benefits of Having a Backup Generator 

Peace of mind

Knowing that you have a backup generator can give you peace of mind during an outage. 

Protection from property damage

Backup generators can help protect your home or business from damage caused by power outages. 

Increased productivity

Backup generators can help you stay productive during an outage. 

Convenience

Backup generators can make life more convenient during an outage. 

Backup generators are an essential part of any home or business preparedness plan. They can provide a reliable source of power during an outage, keeping your home or business running and protecting you from property damage. Backup generators are crucial for businesses of all sizes, providing a reliable source of power during outages and ensuring continuity of operations.  

Backup generators can help to protect revenue and productivity. If there’s a power outage it can bring a business to a standstill, leading to lost revenue, productivity and inability to help their customers. Backup generators can prevent these disruptions and keep businesses in operation. They also provide the ability to safeguard data and equipment. With many modern businesses relying on computers, servers and other electronic equipment, power outages can cause data loss, equipment damage and costly downtime. Hospitals, data centers and other sensitive facilities require uninterrupted power supply provided by backup generators to maintain critical operations and safeguard lives and valuable data. Industries such as hospitals and manufacturing have regulatory requirements for maintaining power supply during outages.

Backup generators provide critical power during emergencies, keeping things like security systems, emergency lights, and fire protection systems running when the power goes out. For businesses, this helps keep employees and customers safe and shows a strong commitment to a safe workplace. Having a standby generator can also help with employee retention, as people feel more secure knowing their safety is a priority.

A reliable backup power system also protects your operations and helps avoid supply chain disruptions. As the power grid faces more risks from severe weather, cyberattacks, and aging infrastructure, backup generators give your business a way to stay open and keep running when others can’t. With the growing risk of cyberattacks targeting power systems, having your own generator fueled and ready is one of the smartest ways to protect your business.

Backup generator fuel delivery from Star Oilco ensures your system is ready when it matters most. Whether you need power for safety, productivity, or peace of mind, a diesel-powered generator is no longer just a luxury. It’s a smart investment for any home or business in the Portland area and beyond.

Need your backup generator fueled? Contact Star Oilco today to refuel your backup generator. Has it been awhile and wondering if you need your fuel checked in your backup generator? Give us a call. We can check your fuel quality to make sure your fuel is ready when you need it. 

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Diesel 1 vs Diesel 2 1024 578 Star Oilco

Diesel 1 vs Diesel 2

Diesel 1 and Diesel 2 can often bring confusion when it comes to understanding what the differences are between them. Consumers can have confusion about which one is best for their equipment or their business. Whether they’re looking for improvements in quality, igniting quickly with its high cetane rating for easy starts in cold weather or ensuring overall efficiency with engine performance and lower maintenance needs. We will explore the differences between Diesel 1 and Diesel 2 and help you understand the benefits of each. 

Key distinctions between the properties of Diesel 1 and Diesel 2 

Before you invest your hard-earned money in fuel that might not be suitable or, even worse, could harm your vehicles and equipment, let’s clear the air. Let’s simplify the differences between Diesel 1 and Diesel 2 in a way that’s easy to follow and gives you the confidence you need. 

Sulfur Content

Diesel 1: Lower sulfur content, reducing sulfur dioxide emissions and aligning with environmental standards.

Diesel 2: Higher sulfur content for specific applications with advanced emissions control. 

Cetane Number

Diesel 1: Boasts a higher cetane number (ignition quality of diesel fuel), ensuring better ignition and smoother combustion, especially in cold weather.

Diesel 2: It has a lower cetane number and is optimized for slightly delayed ignition in engines designed for this grade. 

Viscosity

Diesel 1: It generally has a lower viscosity, facilitating smoother fuel flow and distribution. 

Diesel 2: Its higher viscosity may require specialized fuel systems designed to handle its thicker consistency, such as generator power plant engines or industrial machinery. 

Cold Flow Properties

Diesel 1: It excels in cold climates because it contains kerosene and lacks paraffin, which prevents the diesel from gelling in colder temperatures. So, it’s best for the residents of the coldest regions.

Diesel 2: This fuel needs additional winterization measures in extremely cold temperatures, like mixing Diesel 1 (20%) with Diesel 2 (80%) and additives to lower the viscosity of Disesel 2. But make sure that your vehicle’s engine is capable of handling it.

Additives

Diesel 1: Contains extra constituents that improve cleanliness and lubrication and reduce rusting effects due to corrosion inhibitors in the engine. It also has demulsifiers that separate water from the fuel system and prevent engine problems. 

Diesel 2: Generally has fewer additives; common ones decrease viscosity for more accessible engines starting in cold conditions. Due to the higher wax content, some other chemicals are infused within it to stop the accumulation of wax sediments. 

Engine Wear and Tear

Diesel 1: Gentle on engines with low wax content, anti-corrosive additives, and high cetane rating, resulting in less wear, lower maintenance, and a longer lifespan. 

Diesel 2: Causes more wear, but viscosity contributes to enhanced lubrication and mitigates engine damage by reducing friction. 

Sound

Diesel 1: Less noisy due to its high cetane rating, ensuring rapid ignition and reducing the usual knocking sound linked with diesel engines. 

Diesel 2: Tends to be noisier due to a lower cetane rating and a longer combustion process. Results in higher levels of heat and pressure for a louder engine. 

Smoke Release

Diesel 1: Emits less smoke due to quick ignition and cleaner exhaust due to lower wax levels, demulsifiers, and other additives that cause smoke. 

Diesel 2: Results in smokier emissions because of a lower cetane rating, slower ignition, and increased accumulation of unburned fuel. 

Fuel Energy Efficiency 

Diesel 1: Slightly lower fuel economy (miles per gallon) than Diesel 2 due to its lighter grade and lower heating value. 

Diesel 2: It burns more slowly and proves to be the superior choice for extended highway travel, optimizing efficiency and minimizing refueling stops.

Cost

Diesel 1: It comes at a slightly higher cost because it is enhanced with lubricants, reducing friction for efficient fuel system operation. The premium diesel D1 has more benefits, like reduced repairs.  

Diesel 2: Represents a more economical choice. Despite lacking premium additives, more miles per gallon and a higher heating value make it the least expensive option at the pump. 

Finding the Right Fuel Fit: Diesel Decisions 

Selecting the appropriate diesel for your vehicle is crucial, and it all comes down to your vehicle type, usage, and environmental conditions for optimal performance. Diesel #2 is cost-effective and versatile for everyday commuting, while Diesel #1 is ideal for high-performance or newer engines due to its higher cetane rating.  

Trucks and heavy-duty vehicles benefit from Diesel #2’s versatility and cost savings. In fleet management, Diesel #2 is practical for various vehicles. Diesel #1 is the choice for lower emissions compliance in environmentally strict areas. Always check your vehicle manual for specific recommendations. 

Diesel 1 and Diesel 2 bring unique qualities to engines and the environment. Diesel 1 is cleaner and ideal for high-performance engines and excels in colder climates. Diesel 2, versatile and cost-effective, suits everyday driving and heavy-duty vehicles.  

Understanding these distinctions empowers you to make informed diesel decisions, ensuring engine longevity and environmental responsibility. 

If you have any questions about different fuels, feel free to give us a call and speak to one of our fuel experts.  

503-283-1256
www.staroilco.net 

oregon-diesel-taxes-explained
Oregon Diesel Taxes Explained 1024 685 Star Oilco

Oregon Diesel Taxes Explained

How Oregon Diesel Taxes Are Calculated

As of January 1st, 2022 Oregon is raising Fuel Taxes to $.38 a gallon. (source) The prices in this article have been updated to reflect that.  There will be another $.02 a gallon fuel tax increase set in 2024 as well.

Oregon is unique in its handling of diesel. All fuel isn’t used or taxed the same in the state of Oregon. First off, there is no sales tax for any fuels. The taxes that are charged for diesel are divided into 3 categories: dyed diesel, PUC use and everyday road use or “auto diesel.”  The big difference in pricing is how the diesel is used and the size of the vehicle using the diesel.

 

Oregon Fuel Taxes in a Nutshell

Off-road diesel

If a vehicle is burning diesel “off-road” like a back-hoe, agricultural use, generators or similar use, the fuel is not taxed by either the federal government or Oregon State. This fuel is also dyed red to show it is for off-road use only. If you use dyed red off-road diesel fuel in an on-road vehicle and you get caught, the state of Oregon can and will likely fine you $10,000. Yes, we have seen them do this in recent history.

On-road diesel (auto diesel)

If your vehicle is below 26,000 gross vehicle weight, Oregon charges a per gallon vehicle tax.  This tax is paid at the gas pump, is collected by the retail or commercial cardlock location, and you do not have to consider any additional taxes other than buying on-road fuel.

On-road diesel (P.U.C. diesel)

If your vehicle is above 26,000 gross vehicle weight in Oregon, you pay a weight mile for your vehicle’s state diesel tax.  This cost per mile depends on your registered vehicle weight with Oregon. It is anecdotally assumed at the top weights over 80,000 lbs of gross vehicle weight, this tax is equivalently more than double the per gallon cost of auto diesel bought at a retail location.  This class of diesel usage requires extra P.U.C. filings and vehicles over 26,000 GVW have special P.U.C. plates denoting their class as it relates to diesel fuel tax.

Oregon Fuel Taxes for a Layperson

A small motorhome that would use On-Road Diesel

A small motorhome that would use on-road diesel

On-Road Diesel (Auto Diesel)

The easiest one to understand is on-road diesel, also known as “auto diesel.” Most non-truck vehicles driving on streets, roads, and highways around Oregon fall into this category for use, or as you can see in this picture, a smaller motor home or RV (recreational vehicle).  This fuel is the one you see at a pump at a retail station. Its price includes federal tax, state tax and any applicable local taxes.

Current auto diesel taxes in Oregon for vehicles under 26,000 GVW (gross vehicle weight):

  • Federal tax rate is $.244 per gallon
  • The state tax rate is $.38 per gallon

In addition to these, local municipality and cities have their own taxes that can be added to the price of fuel. To make it even more complicated, some cities charge a different tax amount based on time of season; specifically Newport and Reedsport who charge a few more cents during the summer months. Currently the highest additional taxes are in the city of Portland, Oregon at $.10 per gallon. Source.

Example:
Fuel price at the pump is listed at: $2.989

  • Federal                =$.244
  • State                    =$.38*
  • Portland             =$.10

For a total of                =$.724 per gallon in taxes

The actual cost per gallon would be $2.265. This includes the OPIS (Oil Price Information Service) wholesale price, transportation costs, and the margin the retail station adds to pay its bills (usually $.15 to $.40 depending on the provider).

*January 1st, 2022 Oregon State Tax fuel went up to $.38 per gallon for Oregon Motor Vehicle Fuel Tax. Oregon Use Fuel Tax also went up to $.38 a gallon.

 

Dyed Diesel also called Red Diesel is used for vehicles that don't drive on public roads.

Dyed diesel, also called red diesel, is used for vehicles that don’t drive on public roads.

 

 

 

 

 

 

 

 

Off-Road Dyed Diesel

Dyed diesel, also called farm diesel, marked fuel, or red diesel, is a fuel that has an added dye in the mix. The dye, usually solvent red 26 or solvent red 164, doesn’t cause any change in the operation of an engine versus using regular clear diesel. The dye marks the taxable status of the fuel.

This fuel is intended for only off-road equipment and vehicles. Farm equipment, construction vehicles and any other vehicles that don’t drive on public roads can use this fuel. In addition, any engine or oil heater that burns diesel is allowed to use dyed diesel. Those that have heating oil delivered are purchasing dyed diesel.

The benefit of this fuel is that you save state, federal, and city or municipal taxes. Acquiring this fuel as a customer usually requires access to a commercial fueling station or hiring a fuel company to deliver the fuel. This is likely to prevent accidental use of this fuel in an on-road vehicle. Anyone found using dyed diesel in an on-road vehicle will be fined. Fines are either $10/gallon or $1000 per violation, whichever is greatest (Source). To ensure that diesel users aren’t abusing this fuel, police officers can “dip” a tank; usually by sticking a clear tube into a tank and verifying the color of the fuel.

Oregon PUC Permit and IFTA for vehicles over 26,000 GVW

Oregon PUC Permit and IFTA for vehicles over 26,000 GVW

Oregon PUC Permit

While PUC stands for “Oregon Public Utilities Commission”,  it is the Oregon Transportation Department who regulates fuel taxes and PUC plates.

PUC plates are required by vehicles over 26,000 GVW. Oregon PUC Permit or heavy motor vehicle trip permit refer to vehicles that are at this weight and up to 80,000 GVW. They also include an Oregon PUC card number and a log book that shows fuel usage. View Table “A” tax rates.

These vehicles are only required to pay the federal tax at the pump. They are then required to log the mileage they drive and pay an amount based on weight, number of axles and miles. The heavier the vehicle, the more wear and tear on the road, so the higher the tax.

Oregon per Mileage fuel tax for vehicles between 26,000 lbs and 80,000 lbs.

Source : Oregon Department of Transportation 

The fees are applied for a whole trip. Say a truck is scheduled to drive 100 miles round trip to deliver watermelons. A vehicle driving 100 miles that weighs over 44,000 but less than 46,000 would be charged $0.0907 per mile or $9.07. Trucks that are driving a full load of product and an empty load back pay for the total miles of the trip, including the miles they are driving empty. In the above example, even if half the miles were at the 26,001 rate for the return trip, the taxable rate is the full load price.

Any commercial vehicle that is over 80,000 GVW would use the Table “B”, which is similar but includes different pricing based on the number of axles, not just weight.

Oregon per Mileage fuel tax for vehicles between 80,000 lbs and 105,500

Source: Oregon Department of Transportation

As the vehicles get heavier, the amount of axles used change the price. In the chart, 5 axles at 81,000 miles is $0.2115 a mile and a vehicle with 9 axles and the same weight is $0.162 a mile.

For any additional questions about the PUC plates, tax rates and trucking information in Oregon, please contact ODOT at 503-378-5849.

IFTA – International Fuel Tax Agreement

IFTA is for the same vehicles over 26,000 GVW if they drive into more than one state or into Canada. This helps simplify the reporting process of taxes, refunds and mileage for vehicles that travel in more than one state. These commercial motor vehicles are required to file quarterly with their base jurisdiction and the amount of taxes that they might have paid at the pump is recorded. Then they either pay the difference or receive a refund if they overpaid. Prior to IFTA, trucks would need a permit for every state they operated in.

 

Star Oilco is a supplier of Fuel for NW Oregon and SW Washington. If you have questions about fueling your fleet or your construction site we would love to talk to you.

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To learn more about What Oregon Requires for a Business to Use Pacific Pride and CFN Cardlock Stations

To learn more about RV Vehicles and Pacific Pride or CFN cards

Recent proposed legislation could mean more or different tax handling fees or laws in the future. We will be following these stories as they come out. If you would like to know more – Oregon Legislature proposes an end to petroleum diesel

If you would like to learn a little bit more about biofuels – Every Question We Have Been Asked About Biodiesel & Every Question We Have Been Asked About Renewable Diesel

Got questions about Red Dyed Diesel? We have answers!

what-do-I-need-to-know-about-long-term-diesel-storage
What Do I Need to Know About Long Term Diesel Storage? 1024 768 Star Oilco

What Do I Need to Know About Long Term Diesel Storage?

Here’s good advice if you are relying on diesel as a back up fuel in the Pacific NW.

Now is the time to refill and treat your back up fuel tanks.

Diesel as a back up fuel

Quite a bit of our business at Star Oilco is fueling back-up generators, emergency water pumps, refrigerated trailers and other long term off-road diesel storage requirements. In the Pacific Northwest, biodiesel blending is required by state laws and you need to take an extra duty of care when storing diesel as a back-up fuel.

This means that most off-road diesels and heating oils are ultra low sulfur diesel containing a small quantity of biodiesel.  That means long term storage requires a proactive approach.  You can’t just hope and wait to see what the fuel begins to look after years of storage.

Technical advice from Government Fleet Magazine to help you with storing diesel fuel.

Here is an article from Government Fleet Magazine on the subject which runs through the specifics of long term storage and what causes fuel to degrade when stored.  Government Fleet Magazine – How to Maintain Stored Diesel Fuel.

Star Oilco has also worked up a PDF check list on how to verify if your fuel is in need of freshening or is still in emergency ready shape.  If you are a customer of ours, we will deliver a laminated card version to keep next to your back up generator. If you are not a customer (or outside of our service area) drop us a message below and we will gladly email you the PDF.

For our customers, we recommend that you check the tank bottom fuel quality on an annual basis to make sure the product looks good. If the tank has sat for years and is dark in color (good diesel is bright and transparent – you will notice if it is in bad shape), we recommend pumping the tank out at least partially and replacing with fresh fuel. Often you can also hugely improve the quality of the fuel by polishing the fuel. Polishing is when you circulate fuel from the bottom of the tank through a pump, filter repeatedly in order to remove any sediment or growth from the fuel, and then place this fuel back in the same tank.

Look at your fuel for a bright and clear color.

For stored fuel, you also want to make sure it is stabilized and contains a biocide. Stabilizers prevent the oxidation of the fuel and prevent the effect of metals like lead, copper and zinc, which can react and degrade fuel. For heating oil systems with a return line, for instance, the fuel is flowing through a copper line to the furnace and then back to the tank in a return line.

Use additives designed to prolong the life of your emergency diesel fuel.

Biocides prevent the growth of biological activity in the tank. In scenarios whcontaminated_dieselere micro-organisms like algae, bacteria, yeasts, and other bugs are growing in your fuel, biocides can kill this growth. It is still important to remove the residual grit and other contaminants that are the hallmark of bugs growing in your tank. Usually you remove them by filtration or total turn over of the fuel. If your tank absolutely has to be clean, you can contract a tank professional to enter the tank and physically clean the tank bottom or reline the tank with either fiberglass or an epoxy resin.

Water in diesel destroys fuel quality rapidly. Check your tank for water every fall and spring.

In events where water finds its way into your storage tank, that can also be corrected by pumping the tank bottom. Additionally, you want to put in an absorbent material designed to absorb water and not fuel. If your long term storage tank has water and you are not planning to burn 100% of the fuel in the near future, DO NOT add anything that removes water by distributing into the fuel. Adding a “fuel drier” that actually pushes the water into solution with the diesel will worsen the long term quality of your fuel, not improve it. That water is where bugs find their home to grow in fuel.

Star Oilco will test your fuel at no charge if you have an open account.

Feel free to call us with any questions you may have about long term storage of diesel. Star Oil can also deliver treated diesel ready for long term storage complete with Hydrotex PowerKleen Premium Diesel additive to improve the long term storage quality of your fuel. For biocide, we use Valvtect BioGuard fuel microbiocide to kill any possible biological activity and prevent any chance of it starting.

Diesel Testing and Storage in Portland

If you have a long term diesel storage tank and you are in the Portland, Oregon area, we are here to test your fuel.  Make sure your diesel is there for you when disaster strikes.

Tank Testing Form

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For more reading on diesel fuel quality assurance:

Fight Humbug in your Diesel Tank (using Valvtect Bioguard Plus 6 to stabalize your stored diesel)

Diesel Fuel Technical Review (an easy to read and free text book on diesel fuel)

Emergency Back Up Generator Fuel Quality (designed to provide a checklist to help Facility Managers keep those back up generators ready for emergency action)

Using Desicant Breathers to keep diesel fuel dry and clean (an introductory primer on desicant breathers and how they can be used to keep long term diesel storage drier and cleaner)

Using Diesel Filters to clean up your diesel fuel quality (an introductory primer on using aggressive filtration in line with diesel fuel dispensing for fuel quality assurance)

in-depth-look-at-biodiesel-as-a-heating-fuel
In-depth look at Biodiesel as a heating fuel 1024 768 Star Oilco

In-depth look at Biodiesel as a heating fuel

Can you Bio diesel as a Heating Oil Fuel?

In a recent study, the viability of biodiesel – also known as bioheat – and its use as a heating oil was examined.Star Oilco an experienced provider of BioDiesel Heating Oil

TL:DR Biodiesel up to B20 and beyond do not require equipment changes or settings. Home heating systems have used biodiesel since 2000 and have shown no significant issues compared to standard fuel.

The study reviews pump seal performance, metal interactions, burner combustion and even reviews in-the-field users of biodiesel.

Use of biodiesel reduces GHG (Greenhouse Gas) by 50% – 86% compared to petroleum diesel, according to NORA.

 

In a study from Brookhaven National Laboratory that was submitted to the National Oilheat Research Alliance (NORA), Dr Thomas A. Butcher and Rebecca Trojanowski studied the use of Biofuels in Heating Oil and any possible issues that could result from usage.

Biodiesel mixtures are labeled as B* where the * is the percentage of biodiesel. For example B20 would be 20% biodiesel and 80% petroleum diesel.

By breaking it down into 5 separate studies and a review of actual field use for nearly 20 years, they set out to evaluate the possible fail points of using B20 and higher heating oil blends.

Bio Diesel and Pump Seal Material Evaluation

From the start, the pump shaft seals were identified as the area with the most concern of failure. So, this is where the study began. They identified the most common seals in pumps for North America were nitrile material. The study then focused on this material.

For this part of the study, they took the nitrile material and immersed it in different biodiesel and No.2 fuel blends. They soaked these for 670 hours at 125 °F.  The samples were than checked to see if the hardness changed, looked at swelling, tensile strength, and compression deformation.

Results: There were no significant changes for the nitrite for fuels meeting ASTM standards. This includes biofuel up to B100. The one concern was fuel that had acid numbers above 2 could lead to accelerated degradation. B100 standards call for acid numbers 0.5 and below.

Biodiesel and the Evaluation of Oil Burner Pumps Under Operating Conditions

This second test also dealt with the same seals. The difference in this test was that the pumps were in continuous action. They set up 42 pumps to run for 11 months. A pump would run for 5 minutes and then turn off for a minute. This resulted in 80,000 on/off cycles in a period of 8,030 hours. During this time no leaks were observed in any of the pumps.

Result: There wasn’t any difference in degradation between using B0 and B20.

Exposure of "Yellow Metals" at low temperature with biodiesel

Copper fuel lines are installed in many older oil heating homes. This was due to lower cost and the fact they were easy to manipulate during installation. This could be a problem because No.2 fuel and biodiesel could accelerate the oxidative degradation of the fuels when exposed to copper.

This experiment consisted of using 10 inch tubes filled with different levels of biofuels: B0, B20, and B100. These would be stored at 70 °F  for 6 months in 3 types of tubes: stainless steel, old copper (a fuel line that had been in service for 30 years), and new copper. Most systems only would expose the copper pipes for a very limited time, so 6 months for any exposure is an extreme amount of time.

Results: An acid value of 2 was shown to degrade nitrile material in the earlier experiments. None of the fuel crossed this mark. The closest was B0 in the stainless steel. This fuel got to 1.5 from .04 (where all the fuel started). These tests were considered to represent summer shutdown of a heat-only boiler or furnace.

Exposure of "Yellow Metals" and biodiesel at high temperature

In addition to copper fuel lines, the other major source of yellow metal would be the brass nozzles. Most fuel isn’t in the nozzle long enough to cause any changes, but the fuel left unburned between firings is exposed to higher temperatures then those in the lines. It was decided to try and see if there was changes for this exposure.

The experiment was open top glass beakers with brass and stainless steel nozzles stored in B0, B20, and B100 levels of fuel. This setup was stored in an oven at 175 °F for a week.

Result: The result was a relatively small increase during this time. Even after the experiment was continued for another 4 weeks the numbers represented no significant differences.

Biodiesel Combustion Performance and Flame Sensor Response

The goal of this experiment is to evaluate the proper atomization and combustion performance of biodiesel blends in heating oil systems and to see if there was any issues with flame sensor operation and effectiveness.

The fuel for a home heating oil system requires the fuel to be pushed through a 10 micron filter and then pushed into a fire box at 100 – 150 psi and ignited. This is compared to a diesel engine that have a nominal pore size between 2 and 30 microns and then injected into the system at 20,000 psi.

According to the study, “In comparison to the… diesel engine, heating oil systems are open flame systems and excess air is used to ensure complete combustion. The amount of excess flue gas oxygen is generally between 3% and 6% excess O2 or 15% and 40% excess air to minimize smoke and ensure very low levels of carbon monoxide.” These are usually set by a technician and then re-checked on service calls every 1 or 2 years. “Since properly operating home heating oil systems burn the fuel completely in excess air and emissions are low… Due to this clean combustion, heating oil emissions are typically not measured or monitored, with the exception of smoke and CO.”

The testing was set up first for conventional No. 2 fuel and then adjusted for B100 fuel.

Result: Showed that B20 performed at the same level as regular No. 2 fuel and the bio blend could go all the way up to 50% before the need to adjust the airflow. So, the conclusion was that if the unit is running higher levels of biofuel, the air input needs to be adjust to optimize fuel combustion and reduce CO or smoke.

Review of Field Experience with BioDiesel Blends

Biodiesel blends have been used in the field for heating oil with some using B20 and above since 2005. Part of the study was reviewing customers that have been using B20 above. Of the surveyed providers, none reported a change of any burner or system components.

The report continues to talk about the levels of biofuel that was being used and the condition the fuel was in. Basically it was found that there was no difference from the standard petroleum only fuel.

Conclusion and results of BioDiesel study

  1. Fuels above a certain level of acid content can compromise seals, none of the bio blends reached this and they were statistically similar to petroleum only fuels.
  2. Long term cycling pump showed no leakages with biofuels.
  3. No impact on fuel stored in copper tubing at room temperature was found.
  4. No significant difference on fuel stored with copper at high temperatures and conventional No. 2 fuel.
  5. At higher than B50 concentrations it was found that the burner needed adjusted for best efficiency. B20 will operate at the same level as standard No. 2 fuel.
  6. Finally there appears no real difference in functional use of biofuel vs the use of No. 2 fuel.

So the good news, according to this report, is that if you want to use biodiesel up to B50 there appears no difference in settings or maintenance. As long as a reputable dealer that uses biodiesel that uses ASTM D675 for its B100.

Using biodiesel blends for heating oil reduces greenhouse gases. For more information on this see the NORA report.

B20 Biodiesel Heating oil provider

How to order biofuel as your home heating oil.

Every question Star Oilco has been asked about Heating Oil.

If you want to know a little it more about Bio-fuels and what feedstocks can be used.

 

emergency-back-up-generator-fuel-portland-oregon
Emergency Back-Up Generator Fuel Quality Assurance 1024 683 Star Oilco

Emergency Back-Up Generator Fuel Quality Assurance

Emergency Back Up Generator Diesel Fuel Quality

The fuel in your generator is the single most overlooked item in maintaining a back up generator.  Be prepared and know your back up generator diesel fuel quality is ready with these best practices.

When the power goes out, don’t let a decade old tank of diesel be your weak link.

 

Diesel Generator Fueling Service

As a provider of back up generator fueling services we know how critical fuel is in an emergency.

Back up generators are everywhere when you start looking for them.  Rarely needed but when a storm or disaster strikes their failure to fire will be extremely conspicuous. In the Pacific Northwest where resilience planning around a major subduction zone earthquake is a monthly subject of talk.  Back up diesel will be the only immediately power source after a quake.  Diesel generators are taking center stage for emergency preparedness, placing those who maintain them in some high level policy discussions.

Avoid a double emergency when the back up power isn’t there for your need by focusing on the diesel fuel quality.

The worst case scenario for fuel quality is water getting into your diesel fuel reservoir as well as biological growth occurring in that water logged diesel. If water is present in diesel, and that diesel is in a warm dark place, bacteria will start growing in your tank. So first preventive step is watch for water.  The most likely problem with fuel you will see is the fuel aging and degrading in place over years of not being used.  That can be addressed with your routine maintenance on the tank.

CIM-TEK water absorber

NOTE: To get a small amount of water or to ensure a dryer tank of fuel, CIM TEK makes a Tank Dryer which absorbs a small amount of water in a tank. Handy similar to adding a desiccant into a closet with a slight condensation issue. 

Back up power generator diesel fuel quality.

The big rule for storing back up generator fuel is to make sure the diesel you use is clean and dry.

First ensure you are testing the generator by running it once a month.  Move fuel through the system and ensure the generator is starting right up. Run the generator for a while to use up fuel and be prepared to order a regular top off when you get below 3/4th of a tank. When checking the fluids on the generator prior to start up see if the fuel filter has a visual transparent bottom where you can see what the fuel looks like there. If it looks like dirty fuel or there is evidence of water take notice.  After cycling the generator take a peek and make sure the fuel it’s pulling into the generator is bright (not dark and degraded).  If you are seeing any water (even a small drop) that is an indication of real concerns.

If you are using up half a tank a year and adding to it, the fuel quality will usually stay within specification.  If you have worries the easiest way is to just start over. With older generators sometimes it’s a good idea to just evacuate the tank (empty all the older diesel fuel) and replace it with fresh diesel treated and stabilized for long term storage.

Most back up generators are seeing routine annual maintenance where the mechanical needs of the equipment are walked through. If this is occurring ask for a bottom sample from the back up generators fuel tank. Also ask to see what the fuel in the bottom of the fuel filter (assuming they are changing that) would give an indication if problems might exist deep in the fuel tank.

Back Up Diesel Generator Fuel Service

Sampling and Onsite Testing of Fuel from Generator Diesel Tank:

  1. Pull sample from tank bottom
    1. Use a professional “Bacon-Bomb Sampler” (google it to see one) or a small fuel transfer pump available at any auto parts store.
  2. Visually inspect it by swirling it in a beaker or mason jar.
    • Look for water and dirt fall out as you swirl.  If you see a few drops of water form you’ve got a water problem. If you are seeing coffee ground type material in the fuel, that’s biological growth. If an algal or gunk type slime appears, that’s also biological growth.
    • If clear like cranberry juice and bright – your fuel is in good shape.  If a darker cherry color yet still clear, your fuel is aging and you should consider swapping or burning fuel off in the next year.
  3. If fuel is dark in color (showing that it is aging in the tank) you can send that sample to a lab to test it. You want to ensure you are confirming the following:
    • Oxidation Stability (or Accelerated Stability)
    • Water Content in PPM (under 50 PPM is what you want, under 100 PPM is not uncommon, and over 100 PPM there is probably water in the fuel and you want to pursue remedial action.)
    • Make sure the fuel testing lab you are using (your current fuel vendor should have a recommendation or do it for free for you) is checking for:
      • oxidative stability (if it’s aging out of specification),
      • biological growth (if bugs are growing in it),
      • water content (indicating a puddle someplace in the tank causing higher water content in the fuel) and,
      • dirt content of the fuel (if there is dirt, there is probably biological growth or some other problem).
  4. Set aside sample in a warm dark place for a month and check it for biological growth occurring which will confirm if you have fuel growing inside the tank.
    • How to test diesel for biological growth In-House:
      • Take your sample that appears to be in great condition and set it aside in a warm dark place for a month (day light kills most biological growth in fuel, though day light ages your diesel in other ways).
      • When you come back to look at the sample, if a film or layer of darker color is appearing in the fuel, this is biological growth occurring.
      • If you see nothing and want to experiment further, add a slight amount of water to this sample, shake it up, and put it back in a warm dark place.
      • When you check back if there is a a new layer of darker color on the surface of where the water contacts the fuel, that’s what grows in your tank.
      • If nothing grows, your fuel is safely stabilized for storage this year. Even if water is finding its way into your fuel tank, the fuel is safe and will be ready to start.
        • NOTE: Do not leave water in your tank, even if the fuel looks good. Eventually it will be a major problem and something will grow. If you are putting biocide in your tank regularly and their is an environment for growth, something resistant to that biocide will take root and you WILL NOT be able to get it out of the tank without serious effort.

NOTE: If you are curious to see a fuel lab analysis of the diesel this is an example.  This is a lab analysis from Hydrotex, Star Oilco’s premium diesel additive provider.  They are very supportive in testing everything we send them for quality assurance. 

 

Do you have questions about generator diesel fuel storage?

If you have questions about fuel storage, Star Oilco has answers.  Star Oilco does not do tank cleaning, we still will help you figure out what you need to do in order to have the result you need.

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For more on Diesel Fuel Quality Assurance please see these other Star Oilco articles:

Desiccant breathers, dry diesel, and keeping your diesel fuel clean.

Every question Star Oilco has been asked about dyed diesel.

Keep and make your diesel fuel cleaner. 

Bioguard Plus 6, Kill and prevent biological growth in your diesel fuel storage tank.

 

fight-humbug-in-your-diesel-tank
BioGuard Plus 6 Stabilize Your Diesel Tank 1024 683 Star Oilco

BioGuard Plus 6 Stabilize Your Diesel Tank

Fight Humbug in your Diesel Tank!

Fall weather is around the corner and moisture is depositing in your diesel tank.

Treat your diesel; keep things from growing in your diesel.

Prepare your diesel fuel, heating oil, kerosene, or boiler fuel for storage.

Make sure your fuel works when you need it. If you have a bulk diesel tank, stop stuff from growing in your diesel before it starts.

Star Oilco provides complementary diesel fuel quality testing for tanks in our service area.

Valvtect BioGuard Plus 6

Valvtect Plus 6 – Stabilizer and Biocide

Use every spring and winter to guarantee your tank is not providing a habitat to fuel system spoiling microbes.

Water in diesel is a fact of life these days. Biological growth spoiling your fuel quality does not have to be. Ultralow sulfur diesel and biodiesel have water in them. Over time, water entrained in your diesel fuel can fall out of solution. Add to that they condensation that will natural develop in your fuel tank and you have an environment for hum-bug to grow in your heating oil, diesel, or boiler fuel storage tank.

 

If you are storing diesel for longer than six months you want to stabilize that fuel.

In the summer when temperatures swing at night, your tank is breathing air in and out.  If it is raining, your tank is likely also breathing in the water. With the rainy season and long after it passes, be aware that water is everywhere unless you work to seal it out of your fuel storage system.  You can use a desiccant breather as a way to filter moisture from the atmosphere from getting into our tank.

If your tank does not have a desiccant breather on it, your fuel tank can collect condensation. As air moves in and out of the tank with temperature changes, moisture will collect on the wall of the tank. Yeasts, bacteria, fungi, and algae can grow in that water which collects on the bottom of the tank. Make sure your tank is not a habitat for growing bugs every spring and winter.

Microbiological growth in diesel fuel, also known as “humbug” in fuel, can start growing and if unchecked, will wreak havoc with your fleet. Once it starts in your fuel tank it will spread throughout your fleet. If you see a random need to spin filters between services or odd fuel-related maintenance issues, you likely have bugs growing in your fuel tanks.

Star Oilco recommends BioGuard Plus 6 as a regular biocide for routine maintenance.  

BioGuard Plus 6 is the only EPA certified biocide product that has both a biocide as well as a fuel stabilizer with detergent in one product. This detergent stabilizer acts as an aggressive tank cleaner (NOTE: BioGuard available without Plus 6).

When using Valvtect BioGuard, treat first with a kill, done in your bulk diesel storage. That will spread and kill the growing bugs in your fleet. Maintenance will clean up any remaining bacteria. If you do not have a known or seen problem, a kill twice a year is a great way to guarantee it does not appear and treat the individual tanks of your fleet.

ValvTect BioGuard™ PLUS 6Valvtect BioGuard Plus 6

BioGuard® Plus 6™ is the ONLY EPA registered diesel additive that combines a biocide with a multi-functional diesel additive to prevent bacteria, algae and all other major diesel related problems.

BioGuard Plus 6 is the perfect solution for ultra low sulfur diesel and biodiesel problems; such as bacteria, algae, excess water, sludge, filter plugging, injector wear & deposits, poor fuel economy and unstable fuel.

Only BioGuard Plus 6 prevents bacteria and algae growth, plus:

  • Stabilizes fuel for up to 2 years
  • Prevents rust and corrosion
  • Lubricates pumps and injectors
  • Cleans-up injector deposits
  • Disperses moisture
  • Increases cetane

ValvTect BioGuard Plus 6
“It’s ALL Your Diesel Fuel Needs!”

32 oz Bottle treats 375 Gallons
1 Gallon Bottle treats 1500 Gallons
Also available in 2.5 Gallon Plastic Bottles, 55 Gallon Drums and 300 Gallon Totes

BioGuard ULS Fuel Microbiocide

BioGuard is an EPA registered dual soluble (fuel & water) microbiocide that effectively kills bacteria and fungi that grow in diesel fuel, heating oil and gasoline. It prevents bacteria caused filter plugging and bacteria caused corrosion of the fuel system.

BioGuard typically works in 2-3 hours versus 24-36 hours needed by other biocide products. BioGuard has also been found to be up to twice as effective as other biocides.

This additive can be used in all diesel and gasoline bulk tanks and vehicle tanks, including marine, farm, truck fleet, home heat, generators, and railroad storage tanks.

  • Kills bacteria and other biocontamination quickly
  • Twice as effective as other biocides
  • Breaks up sludge and slime
  • Prevents bacteria plugged filters
  • Prevents bacteria caused corrosion
  • Bottle contains easy measuring spout

16 oz. container treats 460 gallons of diesel fuel at the initial kill treat rate.
16 oz. container treats 920 gallons of diesel fuel at the maintenance treat rate.

 

For a more in depth description of Valvtect BioGuard Plus 6 please click here.

If you have any questions about routine tank maintenance or to order Valvtect BioGuard products, please don’t hesitate to contact Star Oilco directly by email, message, or phone.

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For more information on storing diesel fuel please see the following articles from Star Oilco:

If you are interested in getting a Diesel Storage tank Star Oilco can help.

For a great document on everything diesel we recommend this Diesel Technical Review.

For best practices on storing generator fuel we recommend reading this Emergency Back Up Generator Fuel Storage.

If you are trying to keep your stored diesel dry here is an article we wrote on Desiccant Breathers for your fuel tanks.

If you are looking at getting serious about Diesel Fuel Quality Assurance here is an article we wrote about keeping your diesel cleaner and drier.