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Every Question We Have Been Asked About Biodiesel 1024 768 Star Oilco

Every Question We Have Been Asked About Biodiesel

Every Question We Have Been Asked About Bio-diesel

What is biodiesel?

Biodiesel is a renewable, clean-burning diesel replacement that is reducing U.S. dependence on foreign petroleum, creating jobs and improving the environment. Biodiesel is commonly blended in a 5% to 20% component with petroleum diesel and can be found available at retail around North America as a blended fuel.  Biodiesel is a low CO2, net energy positive fuel which depending on the feedstock it is made from can vary from a 30% to 80%+ reduction in CO2 emissions compared to petroleum diesel.  Biodiesel is made from a diverse mix of feedstocks including recycled cooking oil, industrial non-food grade spent oils, animal fats, as well as virgin vegetable oils such as canola, soy, and corn oil. For more information see the National Biodiesel Board’s “Biodiesel Basics” page.Simple Bio-diesel chart showing how to make

How is biodiesel made?

Biodiesel is most commonly made from taking an animal fat, used cooking oil, or a virgin vegetable oil and mixing it with an alcohol (such as methanol). This process is called transesterification and it creates two products glycerin and esters (usually methyl esters or alkyl esters which is the chemical name for most biodiesel).  The crude biodiesel is then further processed to remove excess water and other impurities. The standards for commercially sold biodiesel in the US is ASTM D6751.

What does ASTM D6751 mean?

Biodiesel to be sold in the United States must meet an industry standard which is ASTM D6751.  ASTM (American Society for Testing and Materials) D6751 is the specifications for B100 or 100% Biodiesel.  Biodiesel is usually blended with diesel fuel for retail sale.  This specification defines the properties of the biodiesel from the refiner prior to sale to the public. The properties include things like flashpoint, water content, oxidative stability, sulfur ppm (parts per million), and other specifics that this biodiesel needs to be at in order to hit these standards (Source).

Once a fuel is within all these properties it can be blended with diesel, which has its own ASTM standards, for more about ASTM D975 and other fuel specification concerns please see the Changes in Diesel Fuel – Technicians Guide for more and very in depth information.

Can biodiesel be used in normal diesel engines? / Which cars use biodiesel?

Regardless of where you are in the United States there is a reasonable expectation of purchasing biodiesel in your diesel fuel.  Formally, B5 is supported by all major OEMs selling diesel engines in the U.S. In 2016, at least 78 percent of diesel vehicles supported B20 (Source).  Regardless of what your owner manual says about biodiesel fuel, B20 biodiesel is a proven fuel and is automatically presumed for any new diesels on the road. In many parts of the United States B20 is a commonly found fuel at retail stations, commercial cardlocks, and national truck stop chains.

In the Pacific Northwest, where low CO2 emission policy is front and center, biodiesel can be expected to be found in every gallon of diesel sold in some form.

Oregon law says “All diesel fuel sold in the state must be blended with at least 5% biodiesel (B5) if that fuel is going to be used in vehicles. For the purpose of this mandate, biodiesel is defined as a motor vehicle fuel derived from vegetable oil, animal fat, or other non-petroleum resources, that is designated as B100 and complies with ASTM specification D6751. Renewable diesel qualifies as a substitute for biodiesel in the blending requirement” (Source).  Oregon and Washington has plenty of retail and commercial cardlock locations selling above 5% biodiesel as the defacto fuel given the incentives as well as low CO2 mandates in Oregon.

Can biodiesel be used for heating oil?

Yes. Biodiesel has been effectively used as a heating oil for over 20 years. In fact an in-depth report by the Sustainable Energy Technologies Department Energy Conversion Group shows that blends up to B50 can be used without needing to change or adjust your settings. Read our blog for a summary of this report.

Can biodiesel be mixed with conventional / regular diesel?

Most biodiesel that is sold is as a blended form with petroleum diesel. In a blend, the “B” stands for the amount of biodiesel that is included in the product. For example, B20 would be 20 percent biodiesel and 80 percent petroleum diesel. Biodiesel can also be combined with renewable diesel – a blend of B20 would be called B20/R80 diesel.

Can biodiesel be used in diesel generators?

Yes. In fact, Oregon is one of several states that require biodiesel be blended into all diesel fuels. That means this fuel has been used successfully in the fuel supply for years. As with any fuel that can sit for extended amounts of time, we recommend you take proper precautions, such as using additives, to ensure your fuel is ready to be used when needed. If this is a concern, please contact us – we would love to talk to you about your storage needs.

Can biodiesel be made from animal fat?

Yes, biodiesel refers to (according to the National Biodiesel Board) a methyl ester made from chemically reacting lipids with an alcohol to produce fatty acid esters. This is called transesterification. The lipids could be sourced from many different types of oils, such as vegetable, soybean or animal fat based oils/tallows. For a deeper dive into some of the different types of feedstocks, read our blog.

Can biodiesel be used in airplanes?

Yes and no. There have been several tests using biofuels but fuel for aircrafts is different than regular diesel. Fuel gels at a plane’s flying altitude so aircrafts can’t use regular diesel or biodiesel. Several tests with biofuels have proven successful. Read more about the use of biofuels in the future.

Can biodiesel freeze?

Gelling is the term used for diesel fuel starting to freeze. The paraffin present in diesel starts to solidify and at lower temperatures, it can start to solidify and crystallize. Some blends of biodiesel at B20 and higher will gell at a higher temperatures than petro diesel. During the winter months, it’s important to use additives that combat this or use lower percentages of biodiesel for your fuel. In low enough temperatures, even petro diesel will freeze.

Can biodiesel replace oil? / Can biodiesel replace diesel / fossil fuels?

At this time, no. While the quality of the fuel for biodiesel and renewable diesel is as high as the petrodiesel we have today, the production of these fuels can’t meet the demand that is needed. This has to do with available feedstock and infrasturcture to recycle usable wastes.

The long answer to this question, though, is YES. As technology advances, there may be a time that all fuel is derived from waste and plant crops instead of petroleum.

For an idea where the market is going and how much fuel we are using here is a little bit more information on current usage.

In the early 2000’s, the biodiesel market was about 25 million gallons. In 2016, the market had grown to 2.8 billion and it’s still increasing. The on-road diesel demand is 35 billion to 40 billion gallons. The industry goal is to be producing 10 percent of the transportation market by 2022 (Source).

Which biodiesel is best?

Biodiesel that meets the ASTM D6751 is the best. While making your own biodiesel isn’t hard, keeping the fuel filtered and free of excess water is challenging. Finding a reputable provider that uses fuel that meets specs and also filters and treats your fuel like Star Oilco helps ensure you’re using the best fuel possible.

Which is biodiesel plant/crop? What crop/plant produces/yield biodiesel?

Any plant that produces an oil can be used to produce biodiesel. The plants and crops that are most likely to be used, would produce a lot of oil for the amount of work that goes into growing them. Some of the experimental crops are ones that grow in areas that don’t produce quality food, like Camelina sativa. A member of the mustard family, it grows well in poor soil and harsh conditions and doesn’t displace crops that produce food.

Here are the blogs we have posted so far about some of the biodiesel feedstocks that have been tested and used.

Feedstock: Babassu oil & Beef Tallow
Feedstock: Borage Oil & Camelina Oil
Feedstock: Algae Oil & Canola Oil
Feedstock: Castor Oil and Choice White Grease
Feedstock: Coconut Oil and Coffee Oil
Feedstock: Evening Primrose Oil and Fish Oil
Feedstocks: Hemp Oil & High IV and Low IV Hepar
Feedstocks: Jatropha Oil, Jojoba Oil, & Karania Oil
Feedstocks: Lesquerella Oil & Linseed Oil
Feedstocks: Moringa Oil & Neem Oil
Feedstocks: Palm Oil & Perilla Seed Oil
Feedstocks: Poultry Fat & Rice Bran Oil

Which is better: biodiesel or diesel?

Biodiesel has advantages of producing lower emissions, providing lubricity to the moving parts and being produced in the United States.

Diesel is more abundant, is easily created from crude oil, and has a lower gel point.

Which is better depends on what you are looking for.

Which states mandate biodiesel?

According to AFMP (American Fuel & Petrochemical Manufacturers):

  • Minnesota: Has a B2 requirement year round (September 2005) and a summer requirement of B20 (May 2018).
  • Oregon: Requires a B5 reguirement year round (July 2007).
  • Washington: Requires 2% of the diesel sold in Washington to be biodiesel (December 2008). This can be substituted with Renewable Diesel (July 2009).
  • Pennsylvania: According to AFMP, “2% biodiesel for on-road compression ignition engines one year after annualized in-state production reaches 40 million gallons, 5% biodiesel (100 million gallons), 10% biodiesel (200 million gallons), and 20% biodiesel (400 million gallons)” (July 2008). Renewable diesel can substitute for up to 25% of this requirement, in addition to heating oil and off-road diesel (May 2011)
  • New Mexico: Requires B5 for all diesel vehicles (July 2012).

Which countries produce biodiesel? / Which countries use biodiesel?

global biodiesel production by country
Biodiesel is produced around the world, led by the U.S., Brazil and Germany.

The US produced 6 billion liters in 2017 or about 1.6 billion gallons. This website has the exact numbers for 2017, 2018 and some of 2019 production of biodiesel in the U.S.

Biodiesel in the US is largely made from soybeans at this time.

United States Month Biodiesel Production 2017 to 2019

Will biodiesel damage my engine? / Will biodiesel damage my car?

Biodiesel can be used in any car or engine that is using diesel. Biodiesel is a solvent this means that it may start cleaning the tank or pipes that previously just used petroleum fuel, for this reason fuel filters may clog initially.

How will biodiesel help save money?

It depends! If the price of a barrel of crude rises to a high level, biodiesel can be cheaper. In addition, if RIN’s are available (basically a credit for using biodiesel), they can lower the price of biodiesel and make it less expensive to use and purchase.

How will biodiesel help reduce pollution?

Petrodiesel uses crude oil, which is trapped CO2 from ages past. When it is burned, it releases this CO2 back into the air.Average Biodiesel Emissions Compared to Conventional Diesel When you use biodiesel, you’re using CO2 that is being captured by the growing plants or the waste. This is current CO2 you aren’t adding to the net sum in the environment.

As for regular pollutants, here is a chart that shows what using biodiesel does compared to conventional diesel. There is a significant reduction to pollutants that are expressed through the exhaust.

How long will ecodiesel last? / How long can biodiesel be stored?

Diesel, including biodiesel, does go bad after awhile. 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. Keep your fuel within specification by ensuring there is no water in the tank and that outside contaminants can’t get into a tank.

Where biodiesel is used? / Where is biodiesel used in the world?

Biodiesel use is encouraged by many countries and usage has increased greatly since 2001. This graph from the U.S. Energy Information Administration shows that the U.S. used 2.1 billion in 2016 or about 22% of the total amount of biodiesel used that year. Wikipedia lists 31 countries and explains the amount of biodiesel they use each year. World biodiesel consumption, 2016

Where to buy biodiesel?

If you live in Oregon, every gas station has at least 5% biodiesel. Cardlock locations throughout the states have stations with biodiesel blends. For other locations, this site is a great resource.

Where can biodiesel be used?

Legally, it can be used anywhere although some biodiesel derived from palm oil is restricted in certain countries.

When / where was biodiesel invented?

The definition of diesel is a liquid that uses compression and oxygen to ignite without the use of a spark. Rudolf Diesel created the diesel engine in Germany. The design for engines first used coal dust suspended in water and later vegetable oils, such as peanut oil. These fuels were later abandoned when petroleum became abundant and cheaper to produce.

Where does biodiesel fuel come from?

In the United States, the primary source for biodiesel is soy beans. According to the U.S. Energy Information Administration, the feedstocks break down as such:

  • Soybean Oil – 52%
  • Canola Oil – 13%
  • Corn Oil – 13%
  • Recycled feedstocks – 12%
  • Animal Fats – 10%

Even with Soybean oil as the primary source, the remaining meal is used to produce food for animal feed. For more information on feedstocks of biodiesel, here is an ongoing blog we have been working on to examine the resulting fuels produced by the various feedstock.

Where are biodiesel plants?

Here is a list of sites in the United States.

When did biodiesel begin?

The original diesel engine ran on peanut oil, so technically biodisesel was first used in the 1890s. Most oils in the 1800s were from bio stocks. It wasn’t until petroleum became abundant and thus cheaper that biofuels and oils were abandoned for this cheaper source.

When does biodiesel gel?

The feedstock determines when biodiesel will gel. The most common feedstock is soy, which has a cloud point of 0°C (32°F) for B100. Petroleum diesel has a cloud point of -45°C (-49°F) to -7°C (19°F) (Source). Cloud point refers to when the paraffin begins to crystallize and the fuel looks a little cloudy.

Biodiesel and petrodiesel is usually blended and this lowers the cloud point of biodiesel in the fuel considerably. In addition, additives are frequently added during cold weather that further lowers the cloud point.

When is biodiesel day celebrated?

National Biodiesel Day is March 18th, which is also Rudolf Diesel’s birthday. August 10th is International Biodiesel Day, a celebration of Rudolf Diesel’s prime model running for the first time on August 10, 1893.

Who invented biodiesel?

The diesel engine is defined by “any internal-combustion engine in which air is compressed to a sufficiently high temperature to ignite diesel fuel injected into the cylinder, where combustion and expansion actuate a piston.” Until petroleum was developed as a cheaper alternative, animal and vegetable oil was used. One of the first fuels used in the diesel engine was peanut oil, and thus biodiesel was born.

Can you use 100% Biodiesel even in the winter?

The answer is YES.  While biodiesel has a lower cloud point then petroleum diesel there is a technology by Optimus Technologies called the Vector System. This allows a truck to start on regular diesel until it gets up to temp and switch over to run on up to 100% biodiesel.  The City of Ames, Iowa is one success story of this technology. (Story Here)

 

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Renewable Diesel as a Major Transportation Fuel in California 1000 723 Star Oilco

Renewable Diesel as a Major Transportation Fuel in California
RENEWABLE DIESEL IS AVAILABLE

STAR OILCO HAS RENEWABLE DIESEL FOR YOUR FLEET

In the Pacific Northwest we have gone from a complete scarcity of Renewable Diesel availability to several players having terminal positions and this next generation sustainable fuel being readily available.  Star Oilco is ready to serve you with renewable diesel in several blends to meet both your fleet’s financial and carbon budgets.

For years California has lead the west coast with availability of renewable diesel and various blends with both petroleum diesel and biodiesel fuels. This experience is available in the research paper below to help inform your fleet in making decisions about de-carbonizing your fleets.

IS RENEWABLE DIESEL WORTH THE ADDED COST?

Fleet managers fell in love with this exceptionally high quality synthetic diesel fuel. Cleaner and drier than your typical petroleum diesel quite  a few believers are willing to pay a large premium for this fuel.  There are hardcore supporters of this fuel and it’s overall ability to reduce operational cost in far excess of it’s added cost. Which raises the next question.  Is it superior to petroleum diesel?

Caravan of white trucks on country highway under blue sky

IS RENEWABLE DIESEL SUPERIOR TO PETROLEUM DIESEL?

The answer points to yes based on initial experience rating the fuel on real world performance, fuel mileage, emissions system maintenance costs, and the much lower CO2 emissions.

The whitepaper shown is probably the most in depth resource for a fleet seeking to understand the potential of renewable diesel for its own use.

Renewable diesel is a next generation diesel fuel.  It has a low CO2 footprint similar to biodiesel, yet it is a high performance fuel that reduces down time and maintenance in urban stop-and-go fleet use.  Long story short, it is an impressive fuel solving many problems associated with modern clean diesel engines.

Given the newness of this fuel along, with the few producers of it, there is a real lack of in depth research on the subject.

If you have any questions about Renewable Diesel please feel free to contact us.

Contact Us

RENEWABLE DIESEL AS A MAJOR TRANSPORTATION FUEL

This white paper is the most in depth examination of Renewable Diesel operating in the real world. It covers a complete view of the product from the perspective of both fleets operating it and regulators seeking to reduce emissions. In our experience this is the most complete document you are going to find to advise a fleet considering using R99 Renewable Diesel.

Whitepaper – Renewable Diesel as a Major Transportation in California: Opportunities, Benefits, and Challenges.
Whitepaper that Gladstein, Neandross and Associates produced for the Bay Area Air Quality Management District and South Coast AQMD.

This report reinforces the manufacturers of renewable diesel’s statements and many anecdotal statements from fleets using the fuel. Renewable diesel sees superior performance in both emission reduction and performance in existing diesel technology. It is a cleaner burning and lower CO2 fuel that also contributes to a lower cost of vehicle maintenance.

According to this August 2017 report, California was on course to see approximately 250,000,000 gallons of R99 fuel sold in the state that year. This is a world-shaking volume of a next generation biofuel. With these readily adopted volumes, no doubt more product will be finding its way into the marketplace. The report cites a CARB expectation of the California Renewable Diesel market growing to over 2,000,000,000 (that’s BILLION) gallons in the next decade.

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Biodiesel Feedstocks – Lesquerella Oil & Linseed Oil 1024 721 Star Oilco

Biodiesel Feedstocks – Lesquerella Oil & Linseed Oil

We’re continuing our deeper look into different types of feedstock that Renewable Energy Group (REG) studied in 2009 in the Feedstock and Biodiesel Characteristics Report. This posts two feedstocks are Lesquerella Oil & Linseed Oil.  Here is a link to the main page of feedstocks we have examined so far.

Lesquerella fendleri Oil

Lesquerella fendleri, also known as Physaria fendleri, is part of the mustard family. (Lesquerella) Physaria Fendleri part of the mustard familyThe common names of this plant are popweed and Fendler’s bladderpod. This silvery-gray perennial has four-petaled yellow flowers that grow on a plant that is about 1 to 16 inches tall. Found in plains and mesas in the southwestern United States, it requires low water usage and is one of the first of the flowering wildflowers in the spring (Source).

Lesquerella produces hairless capsules called siliques which contain 6 to 25 seeds. These seeds contain 20-28% oil with around 62% lesquerolic acid. Lesquerella oil is a source of hydroxyl unsaturated fatty acids, and is useful as a replacement for castor oil in some applications.

While there are benefits from using this seed oil, the dark reddish-brown color of the oil is a potential limiting factor. Potential selective breeding and domestication of the plant may solve this issue, but there haven’t been much momentum at this time. That being said, there have been some studies about growing this plant for its oil and the natural gum in its seed coat for commercial use.

 

Lesquerella Oil and Lesquerella Biodiesel

Lesquerella BioDiesel Certificate of Analysis

 

 

Linseed Oil

Linseed (Linum usitatissimum) is also known as flax in North America. The plant is an annual and can grow in large range of climates. Linseed Oil and SeedsFor example, it grows in Argentina, India, and Canada. Linseed oil has been traditionally used as a drying oil. According to REG report, these seeds contains 37-42% oil. The crude oil contains 0.25% phosphatides, a small amount of crystalline wax, and a water-soluble resinous matter with antioxidant properties.

As one the earliest cultivated field crops in the US, it has found many uses for its oils. Linseed oil can be used as a varnish, pigment binder or to manufacture linoleum. These applications have seen reductions in use due to synthetic options that resist yellowing. Other uses for this plant are as nutritional supplements and foods, although raw linseed oil can become rancid unless refrigerated.  After the oil has been pressed out of the seeds, the leftover residue makes great animal food.

As some of the traditional uses of the plant are replaced with other options, use of this crop for a feedstock in biodiesel is an option.

Linseed Oil and Linseed biodiesel

 

Last article for biodiesel feedstocks was Jatropha Oil, Jojoba Oil, & Karania Oil.

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BioDiesel Feedstocks – Jatropha Oil, Jojoba Oil, & Karania Oil 1024 721 Star Oilco

BioDiesel Feedstocks – Jatropha Oil, Jojoba Oil, & Karania Oil

Jatropha Oil, Jojoba Oil, & Karania Oil

We are continuing our deeper look into different types of feedstock that Renewable Energy Group (REG) studied in 2009 in the Feedstock and Biodiesel Characteristics Report. If you would like to see what feedstocks we have talked about, this is the main page and it links to the ones we have examined.

As a reminder, B20 biodiesel (B20 stands for 20% biodiesel and 80% petroleum diesel) is the drop-in solution for reduced emissions in today’s modern diesel engines. To understand some of the alternate feedstocks that can be used for biodiesel, we are examining a report that Renewable Energy Group (REG) produced in 2009. All certificates of analysis and results are for B100.

This post is a bit different as we have only one successful biodiesel created and two failures. The oils are jatropha oil, jojoba oil and karanja oil.

Jatropha Oil

Jatropha oil comes from the shrub Jatropha curcas, also known as physic nut, Barbados nut, poison nut, bubble bush or purging nut. This plant is a succulent that loses its leaves during the dry season. It is best adapted for arid and semi-arid conditions. The resistance to high degrees of aridity allows it to grow in deserts. This shrub can thrive on only 10 inches of rain for a whole year. It is native to Mexico, Central America, Brazil, Bolivia, Peru, Argentina, and Paraguay. Jatropha curcas is considered a shrub or small tree and can reach a height of 20 ft. or more.Top of a Jatropha plant as part of a hedge

 “Shrubs begin to produce when only 4 – 5 months old, and reach full productivity at about 3 years Under good rainfall conditions, nursery plants bear fruit after the first rainy season, while directly seeded plants bear for the first time after the 2nd rainy season. With vegetative propagation, the first seed yield is higher. At least 2 – 3 tonnes of seeds per hectare can be achieved in semi-arid areas.” (Source)

The seeds contain 27% to 40% oil (Source) and develop in 90 days from the flower to the seed. Trees can have a productive life of 40 to 50 years without tending.

Uses of the plant include medical, edible and as a source of oil for biofuels. The young shoots and even young leaves can be cooked and eaten as a vegetable. The nuts can be eaten but they are purgative and, if eaten in large quantities, can be poisonous.

Medicinal uses include uses the juice from the bark as a treatment for malarial fevers and or using it to treat external burns, scabies and ringworm (Source).

The low maintenance and high oil content makes this plant attractive as a biofuel feedstock. In addition to its use for biodiesel, the oil has been made into jet fuels. In 2008, Air New Zealand flew a plane on 50/50 mix of jatropha oil fuel and jet A1 fuel (Source).

Currently biodiesel is being produced from this plant in the Philippines, Pakistan and Brazil.

 

Jatropha Oil and the biodiesel it produces

Jatropha biodiesel certificate of analysis

Jojoba Oil

Golden jojoba oil was produced from the plant called jojoba (Simmondsia chinensis), an evergreen perennial shrub grown in Arizona, Mexico, and neighboring areas. Some of the common names of this are goat nut, deer nut, pignut, wild hazel, quinine nut, coffeeberry and the gray box bush (Source). The dehulled seeds of jojoba contain 44% of liquid wax ester, which is not a triglyceride.

Seeds on a Female Jojoba BushThis shrub grows to 3 to 6 feet tall and some can get as tall as nearly 10 feet. The fruit is acorn-shaped and .4 inches to .8 inches long.  The seed is dark brown.

Uses of the plant include forage for wild animals such as deer, bighorn sheep and some livestock. In large quantities, the seed meal is toxic to many animals. The oil is different than many of the feedstocks we have discussed.

“Jojoba is unique in that the lipid content of the seeds, which is between 45 and 55 wt.%, is in the form of long-chain esters of fatty acids (FA) and alcohols (wax esters) as opposed to triacylglycerols (TAG) encountered in other vegetable oils and animal fats” (Source).

Because of this, the Jojoba oil wasn’t made into a biodiesel for this study. According to the REG Report:

“The purpose of this project was to transesterify all the feedstocks using the same procedure and if jojoba was done differently, comparisons could not be made with jojoba methyl esters. Jojoba can be transesterified and used as a fuel using a different process.”

Jojoba Oil as a biodiesel feedstock

Karanja Oil

Pure, cold pressed karanja oil was purchased from The Ahimsa Alternative, Inc.Karanja Tree source for Biodiesel Karanja (Pongamia pinnata) is a medium sized evergreen tree, and usually about 25 ft. tall but can grow as large as 80 ft tall (Source). The tree has dark green leaves and the very fragrant flowers of lavender, pink and white.  The tree grows in the humid tropic and can be found in India, China, and Japan. The seed contains 27-39% oil.

Karanja is used for oil production and has some successes in India as a feedstock. In regards to this study, they weren’t able to create a biodiesel fuel using the same procedure as the rest of the feedstocks and therefore there isn’t a sample created to test.

REG’s notes about this oil are as follows:

“Esterification was only able to reduce the FFA (Free Fatty Acid) of the oil to 0.7 wt %. Since 0.5 wt % was the maximum amount of FFA allowed in the feedstock, karanja was not made into biodiesel using the standard procedure. A small scale experiment was performed to see what would happen to the karanja when it was transesterified. A 20 gram sample of karanja oil was used, along with the standard ratios of chemicals as in the other feedstocks for the project. After the water wash step, the karanja formed an emulsion with the water and the phases would not separate. No further refining experiments were done to make karanja suitable for transesterification.”

Karanja Oil

Last article for biodiesel feedstocks was Hemp Oil & High IV and Low IV Hepar

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Diesel Fuel in Portland, Oregon 1024 683 Star Oilco

Diesel Fuel in Portland, Oregon

What is the difference between diesel fuel in Portland, Oregon and the rest of the Pacific Northwest?

Oregon Diesel Fuel

Star Oilco delivers and sells diesel fuel in Portland, Oregon.

We are ready for your diesel needs be they off-road, on-road, biodiesel, renewable diesel, or anything else you want.

Star Oilco has simple fuel solutions to keep your business moving.

On the West Coast, expect biodiesel blends to be in all diesel fuel. B5 biodiesel being the most commonly found fuel. Be aware though, in Oregon,  B20 biodiesel (a 20% blend of biodiesel mixed with petroleum diesel) is extremely common at retail throughout the state. B5 through B20 blends of biodiesel are becoming more common as Oregon’s legal framework regulates CO2 emissions requiring diesel sellers to blend biodiesel or charge substantially more for every gallon they sell.

On top of that, Oregon has a 5% biofuel blend mandate that can include a number of fuels, most commonly biodiesel and renewable diesel. Washington state also has a mandate for 5% biodiesel though it isn’t as specific as the Oregon mandate.

That’s Oregon Diesel. What about Portland?

The city of Portland has a stand-along city fuel tax due to its policy goals (which cause it to codify rules for low CO2 fuels and the sources of diesel in particular), as well as its own budget needs.

Portland, Oregon Diesel Fuel Mandates

A little known fact is that Portland, Oregon has its own biofuels mandate and fuel tax structure on diesel. This mandate affects all diesel equipment both on and off-road use. It does not affect boilers or HVAC systems though most people selling heating oil and boiler fuel are still handling a 5% biodiesel product to ensure they don’t cross fuel in violation of the law.

Functionally, the city of Portland’s mandate and Oregon’s specific mandate do not make a huge difference. Your biggest noticeable difference is the higher price due to the diesel fuel tax, given that Portland’s biofuel mandate now overlaps with Oregon state’s fuel mandates.

For more on the actual code for biofuel mandates in Portland, see the Portland City Code.

Until 2019, Portland had a 5% biodiesel “methylester” mandate. This meant that Portland mandated that all diesel fuel sold inside the city must contain 5% of biodiesel or sellers of fuel inside city limits would face a fine. For years, Portland actually checked every seller of diesel for a 5% biodiesel blend in person annually. This mandate also included feedstocks and did not allow for palm oil sourced biodiesel, as palm oil is responsible for a large amount of deforestation in Indonesia and other places. The Portland mandate required that half of all biodiesel blended to meet the 5% mandate must be derived from canola and waste vegetable oil sources, as Oregon can produce them.

In 2019, the city of Portland suddenly lined up their mandate to match the state of Oregon’s, which allows for renewable diesel to be used as a feedstock. Anything derived from palm is still a barred feedstock for the fuel to meet Portland mandate requirements (which is distinctly different than Oregon’s biofuel mandate).

Onsite Diesel wethose service Portland
Portland, Oregon Diesel Fuel Taxes

(NOTE: Read this article by Star Oilco for more on Oregon Fuel Taxes Explained.

In 2016, the city of Portland, Oregon created its own diesel tax of $.10 a gallon. This tax is on both gasoline and diesel fuels sold at retail or commercially.  If you are operating vehicles over 26,000 GVW that are exempt from Oregon road tax, Portland also has a weight mile for those tax exempt vehicles.

If you are fueling inside the Portland city limits, that diesel tax will be charged at the pump when you fill up unless you are a P.U.C. tax exempted vehicle in Oregon.

Find a list of every diesel and gasoline tax by city and municipalities in Oregon see the Oregon Fuel Tax Group.

If you have any questions about Portland, Oregon diesel fuel standards please feel free to call or message Star Oilco for more information.

Star Oilco is here to be your Bulk Fuel Supplier in Portland, Oregon.

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For more on the subject of Diesel fuel please read these other posts by Star Oilco on the subject:

Every Question Star Oilco has been asked about Biodiesel

Every Question Star Oilco has been asked about Off Road Diesel

About Diesel Fuel – Star Oilco’s Diesel Fuel FAQ

Oregon Biodiesel Tax Breaks for Retail Stations

biodiesel-feedstocks-hemp-oil
BioDiesel Feedstocks – Hemp Oil & High IV and Low IV Hepar 1024 683 Star Oilco

BioDiesel Feedstocks – Hemp Oil & High IV and Low IV Hepar

In this post we are going to continue our deeper look into different types of feedstock that Renewable Energy Group (REG) studied in 2009 in the Feedstock and Biodiesel Characteristics Report. The feedstocks we are looking into are Hemp Oil & High IV and Low IV Hepar. Here is a link to the main page of feedstocks we have examined so far.

As a reminder B20 Biodiesel (B20 stands for 20% biodiesel and 80% petroleum diesel)  is the drop in solution for reduced emissions in today’s modern diesel engines.   To understand some of the alternate feedstocks that can be used for biodiesel, we are examining a report that Renewable Energy Group (REG) produced in 2009. All certificates of analysis and results are for B100.

Hemp Oil

Hemp seed oil comes from the plant Cannabis sativa and contains significant amounts of linolenic acid. The hemp oil in this study was sourced out of Canada and these seeds have an oil content of 33 percent. Cannabis sativa male picture of flowers

Based on Industrial Hemp Regulations in Canada:

“Industrial hemp includes Cannabis plants and plant parts, of any variety, that contains 0.3% tetrahydrocannabinol (THC) or less in the leaves and flowering heads.

Industrial hemp also includes the derivatives of industrial hemp plants and plant parts. These do not include the flowering parts or the leaves.

Examples of derivatives that are considered industrial hemp include: hemp seed oil (oil derived from seed or grain) and hemp flour.”

THC is the chemical that has psychoactive properties and is what makes the cannabis Marijuana vs Hemp.

This biodiesel sample was created with seed oil that contained less than .03% THC.

Cannabis sativa is an annual flowering plant that originates in Central Asia and is now spread world-wide. The uses of the plant include seed oil, food, recreation, medicine and industrial fiber. (Source)

The centuries of early human cultivation of these plants has created a large variety of strains that look, grow and act different.  Pictured is an example of what a Hemp or Marijuana plant looks like in bloom.

 

Hemp Oil and hemp Biodiesel

Hemp Oil Biodiesel Certificate of Analysis

 

 

Hepar, High Iodine Value and Low Iodine Value (IV)

In this situation, Hepar is a byproduct of the heparin manufacturing process. Pharmaceutical grade heparin is derived from the mucosal tissues and of animals, such as pig intestines or cow lungs. (Mucosal tissues are part of the immune system it is the barrier between potential pathogens and the body.) Heparin is a medicine that is used as an anticoagulant.  Since the creation of Heparin is a industry secret, it is difficult to find much information about the byproduct Hepar.

High IV Hepar and Biodiesel

High IV Hepar Biodiesel Certificate of Analysis Low IV Hepar BioDiesel Certificate of Analysis

 

Last article for biodiesel feedstocks was Evening Primrose Oil & Fish Oil

biodiesel-handling-and-use-guide
Biodiesel Handling and Use Guide (5th Edition 2016) 1024 683 Star Oilco

Biodiesel Handling and Use Guide (5th Edition 2016)

Where to start when fueling your fleet with biodiesel.

 

The U.S. Department of Energy’s Biodiesel Handling and Use Guide (Fifth Edition)

If you are a fleet seeking to reduce your CO2 footprint and biodiesel is your drop in solution, this book is your guide.  The Biodiesel Handling and Use Guide is the definitive user’s manual for fleets seeking to field biodiesel and blends as a substitute for petroleum diesel (available from the US Department of Energy’s Alternative Fuel Data Center).

Biodiesel is diesel-rated fuel manufactured from animal fats and vegetable oils by way of a chemical reaction. It is not diesel fuel but it has extremely similar properties, allowing it to be blended with petroleum diesel.

As a drop in fuel, it substantially reduces tailpipe emissions and cuts CO2 emission by more than half when used as a substitute for petroleum diesel. Many states and the federal government have financial incentives to encourage its use. Several states also have mandates for the use of biodiesel as a blend component with diesel fuel.

In the last twenty years biodiesel has come a long way and it is now a mainstream fuel around the United States. In just the last ten years, a great deal has changed with the complexity of diesel engines, the sources of crude oil refined into ultra-low sulfur on road diesel, and the complexity diesel fleets will encounter in operating day-to-day. This book is a scientific and easy-to-read manual to help you navigate success with modern diesel.

The Biodiesel Handling and Use Guide covers the technical aspects of biodiesel and how it differs from petroleum diesel. It also provides advice on higher blends and storing fuel onsite. This guide goes in-depth about equipment compatibility for your refueling infrastructure as well as maintenance concerns you want to get ahead of. There are also checklists included for fleets seeking to move from petroleum diesel to higher blends of biodiesel.

If you have questions or want help in using higher blends of biodiesel in your fleet, don’t hesitate to contact Star Oilco. Even if you are not in our service area, we will be here to help. Star Oilco has been helping fleets succeed with biodiesel blends since 2003.

B20 Biodiesel A PROVEN FUEL

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For further reading on Biodiesel please see the following Star Oilco pages:

Every Question Star Oilco has been asked about Biodiesel

B20 Biodiesel; a Proven Fuel

Oregon Biodiesel Tax Breaks for Retail Stations

In-Depth look at Biodiesel as a Heating Fuel

 

b20-biodiesel-a-proven-fuel
B20 Biodiesel, a Proven Fuel 1024 408 Star Oilco

B20 Biodiesel, a Proven Fuel

Using Biodiesel in the Pacific Northwest.

(NOTE: B20 refers to 20% biodiesel blended with an 80% petroleum diesel percentage. B5 refers to 5% biodiesel blended with petroleum diesel which is the legally required blend percentage in Oregon state. For more on biodiesel basics, visit the US DOE.)

Biodiesel is the “Drop In Solution” used in the Pacific Northwest to reduce CO2 emissions in diesel equipment.

If you are looking to use Biodiesel in a fleet or a personal vehicle it is as easy as just asking for it.  In Oregon the fuel is everywhere.  From an Oregon and Washington state requirement for a minimum 5% of biodiesel blended with every gallon to large financial incentives this low carbon diesel fuel is ready for you if you want it.

It’s not just the Pacific Northwest.  For years B20 has been a defacto blend at some of the biggest names in fuel. When you pull up to the pump on the west coast you are likely getting B5 or B20 as a blend. In Oregon, B5 biodiesel is the required fuel by law. Oregon also has a B20 incentive for a waiver of state on road taxes.  Washington as well has requirements that biodiesel finds its way into retail and commercial diesel throughout the state.   Additionally, Oregon and California have “Clean Fuel Standard” programs which heavily incentivize low CO2 fuels like biodiesel.  Washington state is expected to pass their own Clean Fuel Standard as well this year.  Biodiesel has been a fact of life in fuel for over a decade in the United States and Pacific NW and it is not going away.

Due to a mix of federal and state incentives to use biodiesel, there can also be financial advantages for a fleet dedicated to making B20 biodiesel its fuel of choice. You can see evidence of this at truck stops and other retailers making B20 available in Oregon and Washington, as well as in the trucking lanes of the United States. America’s largest fleets are choosing B20 biodiesel in order to reduce their cost per mile. So can you.

In an effort to deliver the best value to truckers, many U.S. truck stops are blending biodiesel up to 20% when the market enables them to pass along a lower cost yet high quality ASTM specified diesel fuel to their customers. Most prominent is Pilot/Flying J, who lists where and when their sites are serving up B20 or lower blends. Pilot/Flying J buys biodiesel directly and blends on site in order to give their customers the best value possible. Loves Travel Centers also sell biodiesel blends around the U.S.

In Oregon, due to a diesel road tax waiver on B20 sales, gas station retailers Safeway, Leathers Fuel, Spaceage, and others are offering B20 biodiesel as their retail diesel offering. Oregon’s system requires the biodiesel be sourced from used vegetable oil refined biodiesel products. Biodiesel has been in Oregon’s fuel supply since 2006 when the city of Portland mandated B5 biodiesel blends within its city limits. The state of Oregon followed Portland with its own statewide mandate not long after.

(NOTE: If you operate a retail gas station and are curious about Oregon’s fuel tax breaks for biodiesel blends here is a more in depth article Oregon Biodiesel Tax Breaks for Retail Fuel Stations that explains these rules for retailers of fuel).

Biodiesel has been in our fuel system since 2006 and the technology that goes into making it has vastly improved. It is proven in diesel engine performance while also creating a diversified supply for energy and significantly reducing emissions from the working fleets of the world. Biodiesel substantially reduces emission coming out of your stack without a major impact on price because it helps to offset high diesel prices.

B20 Biodiesel A PROVEN FUEL

If you want to look at using B20 blends in your fleet, we are here to help. Star Oilco carries B20 blends for mobile onsite refueling every day of the week. We also have dyed/off-road/heating oil blends of B20. If you are an over the road fleet we can provide B20 at our cardlocks as well as help you procure it with a fleetcard over the road. Let us know if we can be of help.

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about-diesel-fuel
About Diesel Fuel 1024 512 Star Oilco

About Diesel Fuel

Bulk Diesel Fuel Frequently Asked Questions

Ultra Low Sulfur Diesel is 15 PPMDyed Off-Road Diesel

Where your diesel comes from and what you need to know about ASTM Diesel Standards and ISO cleanliness code.

Where do Pacific Northwest vendors get their fuel?

In the Pacific Northwest, diesel is fungible. Everyone buys their fuel from each other in some way or another.  

This means that every refiner is typically expecting to mix their diesel and gasoline products. The real difference is in the care a vendor takes to filter the fuel, additize and continuously check their fuel quality. If you are buying at the absolute lowest price possible, know that there is an incentive to skip any added value of quality assurance.

Through its Pacific Operations unit, Kinder Morgan operates approximately 3,000 miles of refined products pipeline that serves Arizona, California, Nevada, New Mexico, Oregon, Washington and Texas. With roots dating back to 1956, it is the largest products pipeline in the Western U.S., transporting more than one million barrels per day of gasoline, jet fuel and diesel fuel to our customers. The company-owned terminals also provide additional services, such as liquid petroleum product storage and loading facilities for delivery trucks.

Diesel Fuels

In the United States, diesel fuel is controlled according the American Society for Testing and Materials Standard D975-97.  This standard describes a limited number of properties that diesel fuels must meet.  It should be noted that the requirements are all performance- based.  They do not mandate the composition of the fuel, only the specific performance related requirements demanded of a fuel for a diesel engine.  The requirements of D975 are described below. 

ASTM Specifications for Diesel Fuel Oils (D975)*

* You can go to the source of ASTM HERE if you have an interest in really getting in depth.

Diesel fuel is characterized in the United States by the ASTM standard D975.  This standard identifies five grades of diesel fuel. We are only going to talk about the two most popular commercially diesel fuel used — No 1 and No. 2 diesel. The ASTM D975 standard is made up of a series of different tests that check the characteristic ranges of a fuel to confirm it is adequate to operate in your equipment. In simple terms, they are checking for specific gravity, the vapor point (when it turns into a gas), the flash point (when it catches fire), the dirt content, water content (how much microscopic entrained water), and a host of other requirements diesel must meet in order to be legal to be sold for use in your engine.

Grade No. 1-D and Ultra-Low Sulfur 1-D: This is a light distillate fuel for applications requiring a higher volatility fuel to accommodate rapidly fluctuating loads and speeds, as in light trucks and buses. The specification for this grade of diesel fuel overlaps with kerosene and jet fuel, and all three are commonly produced from the same base stock. One major use for No. 1-D diesel fuel is to blend with No. 2-D during winter to provide improved cold flow properties.  Ultra Ultra-Low sulfur fuel is required for on-highway use with sulfur level < 0.05%. 

Grade No. 2-D and Ultra-Low Sulfur 2-D:  This is a middle- or mid-grade distillate fuel for applications that do not require a high volatility fuel. Typical applications include high-speed engines that operate for sustained periods at high load. Ultra-Low sulfur fuel is required for on-highway use with sulfur level < 0.05%.

RecologyDealing with Dirty Fuel and Today’s Tier 4 Engines

Water and dirt are the biggest concerns for fuel quality. Why? Because no matter how perfect fuel is refined, these two elements can find their way into fuel and crash its performance. Water and dirt often build up in tanks just from the temperature change between night and day, causing a bulk fuel tank to breathe. Condensation and dust can also find their way into a bulk storage tank. If not addressed, they build up and will cause mechanical failures.

Dirty fuel will cause premature parts failure in equipment of any age. But newer equipment has far tighter tolerances than what we saw in previous decades. Today’s new and improved Tier 4 rail injector engines are more efficient, they burn cleaner, and run better, they are more powerful than ever before. But there are things that make fuel quality more important than ever. Because of the extremely high pressures (upwards of 35,000psi at the injector tip), the possibility of damage from dirty wet fuel is more prevalent than ever. This damage is much more pronounced in newer equipment with High Pressure Common Rail (HPCR) fuel systems. Hard particulate is commonly referred to as “dirt,” but is in fact made up of a wide variety of materials found at job sites (coal, iron, salt, etc.), generated by fuel tanks and lines (rust, corrosion, etc.) and inside engines (carbonaceous materials and wear particles).

Frequent diesel fuel filter changes — as well as the expensive, and time consuming, task of cleaning diesel fuel tanks — have become acceptable periodic maintenance, instead of a warning signal, for diesel engine failure. Diesel fuel filter elements should last a thousand hours or more, and injectors should endure 15,000 hours. However, since diesel fuel is inherently unstable, solids begin to form and the accumulating tank sludge will eventually clog your diesel fuel filters, ruin your injectors and cause diesel engines to smoke.

Symptoms

  • Clogged and slimy filters
  • Dark, hazy fuel
  • Floating debris in tanks
  • Sludge build up in tanks
  • Loss of power and RPM
  • Excessive smoke
  • Corroded, pitted injectors
  • Foul odor

The solids that form as the result of the inherent instability of the diesel fuel and the debris formed in the natural process of fuel degradation will accumulate in the bottom of your fuel tank. The sludge will form a coating or “bio-film” on the walls and baffles of the fuel tank, plug your fuel filters, adversely impact combustion efficiency, produce dark smoke from the exhaust, form acids that degrade injectors and fuel pumps, and impact performance. Eventually, fouled diesel fuel will clog fuel lines and ruin your equipment.

The Bigger Picture: ISO (International Standardization Organization)ISO Chart 1

In today’s world, the definition of what constitutes clean or dirty fuel is critically important and, as such, fuel cleanliness levels are now measured and reported according to the ISO Cleanliness Code 4406:1999. The International Organization for Standardization (ISO) created the cleanliness code to quantify particulate contamination levels per milliliter of fluid at three sizes: 4μ, 6μ, 14μ. Microns.

Fuel Cleanliness vs. Engine Technology

Fuel cleanliness levels using the ISO4406:1999 method were officially documented as a global standard only as recently as 1998 with the development of the Worldwide Fuels Charter (WWFC). Since its inception, the charter has established a minimum cleanliness level for each of the diesel fuels under various available categories around the world.

Most mainstream engine OEM’s now subscribe to these standards. Interestingly (and somewhat troubling to note), however, is that fuel cleanliness levels as specified by engine OEM’s and the WWFC have not changed since their inception in 1998, despite the enormous advances in fuel injection technology. This relationship is best represented in the previous table that identifies the advances in fuel injection systems and clearly highlights how OEM’s and the WWFC have not responded to reduce fuel cleanliness in accordance with advancements in technology.

Diesel Fuel Injection – Advancing Technologies & Cleanliness Levels

ISO Chart 4This table  identifies that, over time, fuel injector critical clearances have halved and fuel pressures have doubled, yet the level of fuel cleanliness being specified has not changed in accordance with such advancements. In fact, the same cleanliness levels specified in 2000 are still being used today despite these magnificent technological design advancements by engine manufacturers worldwide.

Leading fuel injector manufacturers around the world have clearly identified and communicated that they require ULSD fuels with ISO fuel cleanliness levels as low as ISO12/9/6 to maintain ultimate performance and reliability. It is here where we see an enormous mismatch in what the fuel injection OEM desires as a fuel cleanliness level, to what the engine OEM’s and the WWFC are advising the industry. The following table identifies the discrepancies in fuel cleanliness levels.

Diesel Cleanliness Levels

 ISO Chart 3                        

 

 

 

 

 

WWFC Diesel Category Fuel Cleanliness Standards                                                                                                      ISO Chart 5

 

 

 

 

Damage Caused by Hard Particulate

Hard particulates cause problems with moving parts in the fuel system. This can lead to starting problems, poor engine performance, idling issues and, potentially, complete engine failure. All too common, hard particulates damage engines.

The spray pattern generated by the HPCR injector is critical for proper combustion and overall fuel system performance. (1) sm-injector-with-red-light-Bosch

It must be extremely precise in terms of quantity, distribution and timing. Ball seat valves are sealed with balls that are only 1mm in diameter. A good seal is absolutely necessary for proper injection. Damage from erosive wear, such as shown below, will cause over fueling, leading to decreased fuel efficiency and eventually shut you down altogether.

hpcr injector damaged by hard particulate(3) high-pressure-fuel-system-wear

Pump performance can also be compromised by scoring and abrasive wear. These issues are magnified by tighter tolerances and extreme pressures in HPCR engines. In these circumstances, it is the smallest particles (1-5 microns in size) that cause the most damage, virtually sand blasting part surfaces.

Allowable Levels of Hard Particulate 

(4) dirt-in-vs-allowed-in-1000-gal-dieselIn some parts of the world, 10,000 gallons (38,000 liters) of “typical” diesel contains 1-1/2 lbs (700 grams) of hard particulate; this is 1000 times more than the 1/4 oz. (0.7 grams) per 10,000 gallons (38,000 liters) that is allowed by the cleanliness requirements of high pressure common rail fuel systems. In reality, there is no “OK” level of hard particulate. Injector manufacturers are very clear that damage caused by hard particulate reaching the engine is not a factory defect, but rather the result of dirty diesel that is not fit for use in HPCR fuel systems. At the end of the day, the end user is responsible for the fuel he puts into his equipment, and the consequences thereof.

How Dirt Enters Fuel

Dust and dirt are all around us, especially on job sites. Diesel fuel is fairly clean when it leaves the refinery but becomes contaminated each time it is transferred or stored. Below you will find some of the key contributors of fuel contamination:

Pipelines: Most pipelines are not new, and certainly not in pristine condition. Corrosion inhibitors are added at most refineries to help protect pipelines, but rust and other hard particulate is nevertheless picked up by the fuel that flows through them.

Barges and rail cars: How often are they drained and scrubbed out? What was in the last load? Where did it come from? How much of it was still in the tank when your load was picked up? How long was it in transit? Is the tank hermetically sealed? There are many opportunities for contaminants to make their way into the fuel.

Terminal tanks: Terminal tanks usually see a high rate of turnover, so there is not much time for the fuel to pick-up contamination from outside ingress. Has the tank ever received a “bad load” from a pipeline or a barge? Has larger dirt had a chance to settle on the bottom of the tank? How often has it been cleaned out? Was it just filled? Did the bottom get churned up in the process? How full was the tank when your fuel was loaded into the delivery truck? There are many variables that can affect fuel cleanliness.


Finger-swipe-diesel-tanker-air-inlet

Delivery trucks: All the same issues that apply to stationary tanks also apply to tanker trucks, except that truck tanks never get a chance to settle. In addition, have you ever considered how much dirt gets into that tanker while it is delivering fuel to a customer, potentially a customer in an extremely dusty environment? As fuel flows out, air is sucked in to displace it. Is there anything protecting the inside of the tank from all the dust in the air? Generally not. Venting is typically completely unprotected, as seen in the image to the right.

Storage tanks: Onsite bulk storage tanks typically see less rapid turn-over than terminal tanks. In addition to those issues, yard and jobsite tanks can also develop serious problems with other sources of contamination, such as the ingress of dirt and water, condensation, rust, corrosion, microbial growth, glycerin fall-out and additive instability. Time and temperature become big factors affecting fuel quality.

Dispensing process: How far does your diesel need to travel between the bulk tank and the dispenser? The more pipe it runs though, the more potential there is for contamination. Are your dispenser nozzles kept clean? Are they ever dropped on the ground? Then what? What about the vehicles’ fuel tank inlets, are they clean? Think about the extremely tight tolerances in your fuel system, then take another look at housekeeping issues. You will see them through new eyes.

Onboard fuel tanks: Contamination continues even after the fuel is in the equipment. What has that tank seen in the past? Has it been left stagnant for long periods? What kind of protection is there on the equipment’s air intake vents? Heavy equipment does hard, dirty work.

Engines: Unfortunately, even if the fuel in your tank could be perfect, additional contamination is generated by the fuel system itself. Wear particles are created by mechanical friction. High heat and extreme pressure generated inside the modern engine, lead to coking and the creation of carbon products at the injector. Much of this internally-produced particulate is returned to the fuel tank, along with the unburned diesel.

The Bottom Line

No one gets special fuel, no one has better fuel, no one has cleaner fuel. Diesel fuel vendors get the same fuel, from the same pipeline, delivered to the same terminals. We all wait in the same lines with our tank trucks to get that same fuel. So ask yourself: Given that the fuel is the same, what sets one vendor apart from all the others? Star Oilco Premium Diesel fuel is treated with Hydrotex PowerKleen® additive running through Donaldson filtration systems.

Clean, dry, premium diesel

FURTHER READING ON DIESEL FUEL:

Read about Star Oilco’s approach to Fuel Quality Assurance: Star Oilco – Precision Fuel Management

Read about dealing with biological growth in your diesel tank: Bioguard Plus 6 biocide treatment for diesel

Get Chevron’s Technical Manual to Diesel Fuel (essentially an easy to read text book on diesel): Chevron’s Fuel Technical Review

Get a white paper from Donaldson Filtration on tier 4 engines and fuel cleanliness: Donaldson on Tier 4 Engine Fuel Contamination

Read more about Donaldson Desiccant Breathers for bulk diesel tanks: Why use a Donaldson Desiccant Breather for a bulk diesel storage tank.

desiccant-filters-dry-diesel-and-keeping-your-diesel-fuel-clean
Bulk diesel desiccant filters, dry fuel, and keeping your diesel fuel clean. 1024 684 Star Oilco

Bulk diesel desiccant filters, dry fuel, and keeping your diesel fuel clean.

Bulk diesel fuel delivery and storage best practice.

Use Desiccant Breathers and Premium Diesel additives to improve your diesel performance and reduce maintenance cost.

Save tens of thousands on fleet maintenance costs!

How? Clean, dry, and premium-treated diesel.

Reduce injector wear and particulate trap service needs with simple steps focused on fuel quality. Get the water and dirt out of your fuel with aggressive filtration and then upgrade the fuel’s lubricity, detergency, cetane, and performance with Hyrdrotex Power Kleen premium diesel.

Call Star Oilco if you want to permanently solve bulk diesel quality issues with our Precision Fuel Management program.

Do you have a bulk diesel storage tank?

Does that tank seem to have water in the bottom of it and you can’t seem to figure out where it’s coming from?

You call your diesel supplier and they say they know it isn’t them. If that’s your experience, Star Oilco can explain where that water is probably coming from. With the help of Hydrotex, Star Oilco can also lab test your fuel quality and prove we are in improving it as well.

desiccant filter in field

All storage tanks are different. But for the most part, if your tank seems to take on water randomly. It’s probably from the tank breathing. Especially if you have a large above ground tank. In fact, if you tracked it on a calendar it probably happens the same time of year in conjunction with a weather pattern your tank responds to.

How it works is as the temperature changes the tank’s space that is not filled with fuel will breathe in and out. The temperature and air pressure move air in and out of the tank. As does dispensing fuel out of the tank and then refilling the tank. When that happens, especially if you have a significant amount of humidity in the air or misting rain, water makes it’s way into your fuel supply. As temperatures change, moisture is drawn into the tank, condenses on the inner wall of the tank, and then deposits itself on the bottom of the tank.

This water not only poses a risk to your engines, but if your fuel isn’t treated for stability and performance, that fuel is guaranteed to start growing bugs and algae that will spread throughout your fleet and will have your mechanics spinning filters and dealing with random problems due to this diesel biological growth.

This problem is also exacerbated by ineffective fuel additives trying to keep your fuel dry, clean and safe for your injectors to process, which ensures that water does not get absorbed by your diesel. A single drop of water falling out of solution in today’s high pressure fuel rails and your engine can blow an injector.

HOW DO YOU SOLVE WATER IN YOUR DIESEL TANK?

ANSWER: DESICCANT BREATHERS ON YOUR VENTS

Desiccant diagram

Star Oilco recommends Donaldson desiccant filters, given their excellent full line of products and support. More on the full Donaldson Clean Dry Fuel program here: Donaldson Clean Diesel Kits Brochure.

The Donaldson desiccant breaker mounts to the top of a tank at it’s vent point. This addition seals the point of failure for water to get into your tank. Though in some cases it doesn’t stop 100% of water from ending up in your fuel tank, it definitely guarantees you know where it won’t be coming from, the environment around your tank.

(NOTE: If dealing with underground storage tanks also be aware that if you seal the vent with a desiccant filter and you still have incident’s of water, it might be a leak in the bottom of the tank where rain water is making its way into the tank.)

By using Donaldson filters, Star Oilco also gains the benefit of support from Hydrotex PowerKleen diesel fuel lab to analyze fuel to guarantee that the before and after samples of the fuel are moving as expected and the problem is solved. Running diesel samples can cost as much as $200 each time–having a partner that backs up our solutions with ASTM and ISO measured verification is a must.

The first step in getting better performance from your diesel fuel is to test your bulk diesel storage tank.

To get a complementary ASTM diesel fuel test, contact Star Oilco for assistance.

Clean, dry, premium diesel

Tank Testing Form

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