Bulk Fuel

We have daily routes for diesel fueling in Portland, Oregon and Vancouver, Washington. If you need diesel, kerosene, gasoline, biodiesel, or renewable diesel in bulk or as a wet-hose fueling service, we are ready for your next project.

Green diesel nozzle fueling refrigerated trailer in Portland snow
Do you have questions about Renewable Diesel in Oregon? 1024 768 Star Oilco

Do you have questions about Renewable Diesel in Oregon?

Renewable Diesel delivered in Oregon

Renewable Diesel vs Petroleum Diesel Burn Test

Imagine a superior next generation renewable diesel direct to your fleet.

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Star Oilco is delivering R99 Renewable Diesel to fleets now.

Renewable Diesel delivered to your fleet by mobile onsite fueling or in bulk.

Imagine a fuel that is cleaner and drier than your typical diesel fuel bought in Oregon.  Now imagine that this dry and clean characteristic means a better performing fleet.  A fuel that causes less maintenance and increased performance benefits as it relates to your modern Tier 3 Diesel Emission systems.  Fewer DPF (particulate trap) regens and other post engine maintenance issues in your fleet while more power and up time reported by the drivers behind the wheel.  Now add to that a more than half reduction in CO2 emissions and Oregon has incentives for the adoption of this fuel because it is a biofuel.  A biofuel that outperforms traditional diesel in performance, emissions, and in lifecycle analysis.

That next generation biofuel is her, Renewable Diesel!

Star Oilco can deliver Renewable Diesel to your tank in Oregon and Washington.  If you are looking at this fuel we will work hard to make it easy for you regardless of how small or large your fleet. It is immediately available for bulk customers.   If you are interested in mobile on-site refueling, wet-hosing, construction job site fueling, or a retail option for the fuel we can work with you as well to make that happen.

Renewable Diesel: A Next Generation low CO2 Diesel Fuel.

This product is available in Oregon and we are excited to make getting this fuel simple.  Star Oilco is a proud seller Renewable Diesel product. If decarbonizing your fleet is your goal  while reducing the total cost of maintenance on your fleet, Star Oilco is ready to serve your needs.

Renewable Diesel is available from several manufacturers of Renewable Diesel shipped to Oregon, Washington and California.  This product being made available given it’s lower than petroleum CO2 emissions meeting the Low Carbon Fuel standards created by California, Oregon, and expected in Washington state.

Renewable Diesel clean burning

For more on Renewable Hydrocarbons, please check out the US Department of Energy’s Alternative Fuels Data Center page on the subject. 

Call Star Oilco with any questions you may have about Renewable Diesel, Biodiesel, Ethanol or other emerging alternative fuels.  We have a track record of making alternative fuels easy for those wanting to use them. Call 503-283-1256 or email OrderDesk@Star Oilco.net and we can get you in conversation with our team about a future fuel available today.

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Star Oilco is delivering R99 Renewable Diesel to fleets in bulk and by mobile onsite fueling.

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For more on Renewable Diesel please also see the following:

Renewable Diesel as a major Transportation Fuel in California

Every Question Star Oilco has been asked about Renewable Diesel

Renewable Energy Group’s Ultra Clean Diesel (Renewable Diesel fuel blends)

lose-up of a red fuel nozzle at a green diesel pump
Renewable Diesel or Biodiesel: Which Is Better? 683 1024 Star Oilco

Renewable Diesel or Biodiesel: Which Is Better?

What’s the difference and how do they compare in price? 

If you are looking for a cleaner and greener alternative to diesel fuel, you might have come across two options: renewable diesel and biodiesel. Both fuels are made from organic sources, such as vegetable oils and animal fats, but they have different production processes and properties. In this blog post, we will compare renewable diesel and biodiesel in terms of their pros and cons, as well as their prices and incentives in Oregon. 

What is Renewable Diesel? 

Renewable diesel is a fuel that is chemically identical to petroleum diesel, but it is made from renewable raw materials through a process called hydrotreating. Hydrotreating removes impurities and oxygen from the feedstock, resulting in a pure and refined fuel that can be used in any diesel engine without modifications or blending. Renewable diesel (R99) has a high cetane number, which means it ignites easily and burns efficiently. It also has a low cloud point, which means it can withstand cold temperatures without gelling or clogging filters. 

What is Biodiesel? 

Biodiesel is a fuel that is made from renewable raw materials through a process called transesterification. Transesterification converts the feedstock into fatty acid methyl esters (FAME), which are then blended with petroleum diesel at various ratios. Biodiesel can be used in most diesel engines, but it may require some modifications or adjustments depending on the blend level and the engine type. Biodiesel has a lower cetane number than renewable diesel, which means it may not ignite or burn as well. It also has a higher cloud point than renewable diesel, which means it may gel or clog filters in cold weather. 

The cost of renewable diesel and biodiesel depends on various factors, such as the type and availability of feedstock, the production process, the market demand, and the government incentives. In general, renewable diesel is more expensive than biodiesel, as it requires more complex processing and higher quality feedstock. According to the U.S. Energy Information Administration (EIA), the average wholesale price of renewable diesel in California was $3.06 per gallon in October 2021, while the average wholesale price of biodiesel was $2.76 per gallon in the same month. However, both renewable diesel and biodiesel can benefit from federal RIN’s and state credits such as the low carbon fuel standards, which can lower their effective prices and make them more competitive with petroleum diesel. As of July 10th of 2023 renewable diesel (R99) in Portland Oregon was 60 cents higher than biodiesel (B99). 

 Renewable Diesel vs Biodiesel Carbon Intensity 

According to CARB, the carbon intensity of biodiesel ranges from 14.85 to 67.45 gCO2e/MJ and, renewable diesel ranges from 15.84 to 62.86 gCO2e/MJ, depending on the feedstock and production pathway. The lowest carbon intensity for biodiesel is achieved by using waste cooking oil as the feedstock and renewable methanol as the transesterification agent. The highest carbon intensity is associated with using soybean oil as the feedstock and fossil-based methanol as the transesterification agent. The lowest carbon intensity for renewable diesel is achieved by using waste cooking oil as the feedstock and renewable hydrogen as the hydrotreating agent. The highest carbon intensity is associated with using soybean oil as the feedstock and fossil-based hydrogen as the hydrotreating agent. 

Fuel-Pathways-Carbon-Intensity-Values

Pros and Cons of Renewable Diesel and Biodiesel 

Both renewable diesel and biodiesel have some advantages and disadvantages compared to petroleum diesel. Here are some of the main pros and cons of each fuel:  

Renewable Diesel Pros: 

– Reduces greenhouse gas emissions by up to 75% compared to petroleum diesel 

– Reduces tailpipe emissions of particulate matter, nitrogen oxides, carbon monoxide, and hydrocarbons 

– Improves engine performance and efficiency with fewer regeneration cycles of the emissions system 

– Compatible with existing infrastructure and vehicles 

– Biodegradable and nontoxic 

Renewable Diesel Cons: 

– More expensive than petroleum diesel 

– Limited availability and supply 

– May increase emissions of sulfur dioxide 

Biodiesel Pros: 

– Reduces greenhouse gas emissions by up to 78% compared to petroleum diesel 

– Reduces tailpipe emissions of particulate matter, carbon monoxide, and hydrocarbons 

– Biodegradable and nontoxic 

– Supports domestic agriculture and energy security 

 Biodiesel Cons: 

– May increase emissions of nitrogen oxides 

– May cause engine problems such as injector coking, filter plugging, corrosion, and reduced lubricity 

– May degrade over time or when exposed to water or microbes 

Oregon Prices and Incentives for Renewable Diesel and Biodiesel 

Oregon is one of the states that has adopted a Clean Fuels Program (CFP), which aims to reduce the carbon intensity of transportation fuels by 10% by 2025. The CFP creates a market for low-carbon fuels such as renewable diesel and biodiesel by requiring fuel suppliers to either blend them with petroleum diesel or buy credits from low-carbon fuel producers. The CFP also provides incentives for consumers to use low-carbon fuels by reducing their fuel taxes. 

According to the Oregon Department of Environmental Quality (DEQ), the average price of diesel in Oregon as of November 2021 was $3.87 per gallon. The average price of biodiesel blends ranged from $3.88 per gallon for B5 (5% biodiesel) to $4.01 per gallon for B20 (20% biodiesel). The average price of renewable diesel was $4.05 per gallon. As of July 2023 the price of renewable diesel (R99) in Oregon was 50 to 60 cents higher than biodiesel (B99). 

The DEQ also provides a Fuel Cost Calculator that allows consumers to compare the costs and benefits of different fuels based on their vehicle type, fuel efficiency, annual mileage, fuel price, carbon intensity, and tax rate. According to the calculator, using renewable diesel instead of petroleum diesel would save an average consumer $34 per year in fuel costs and reduce their carbon emissions by 1.6 metric tons per year. Using biodiesel instead of petroleum diesel would save an average consumer $12 per year in fuel costs and reduce their carbon emissions by 0.8 metric tons per year. 

Renewable diesel and biodiesel are both viable alternatives to petroleum diesel that can help reduce greenhouse gas emissions and support renewable energy sources. However, they also have some trade-offs in terms of cost, availability, performance, and emissions. Consumers should consider their vehicle type, driving habits, fuel preferences, and environmental goals when choosing between these fuels. Oregon offers some incentives and programs to encourage the use of low-carbon fuels such as renewable diesel and biodiesel, which can help consumers save money and reduce their carbon footprint. 

Close-up of diesel engine with visible oil cap, piping, and metal components
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

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home insulation representing energy efficiency for renewable fuel standard compliance in Portland Oregon
Portland Renewable Fuel Standard Explained 1024 683 Star Oilco

Portland Renewable Fuel Standard Explained

Did you hear about the time Portland banned fossil fuel diesel?

Portland is making a big move to provide cleaner air and reduce greenhouse gas emissions. Portland has implemented what’s called the Renewable Fuel Standard (RFS) beginning  its first phase on May 15th, 2024. The RFS policy in Portland mandates that there has to be an increase of use of low-carbon biofuels in diesel within city limits of Portland. This is part of the ultimate Climate Emergency plan. This RFS mandate was first implemented in 2006 as a B5 (5%) Biodiesel blend mandate with the goal of mandating a 20% blend. The RFS is the first of its kind not only in Oregon but in the entire United States. Portland’s reputation as a leader in environmental sustainability efforts continues. 

Portland’s Phases To Implement Almost 100% Renewable Diesel

What makes Portland’s mandate unique is the requirement that the biofuels have a CO2 value so low it bars most American made biodiesels. The blending requirement starts at 15% in 2024, and then it will steadily increase to 50% by 2026 and will reach 99% by 2030. This schedule demonstrates how Portland’s low-carbon ambition is present to transition away from fossil fuels and promote alternative energy sources.

This policy is expected to reduce air pollution and carbon emissions. It will also create new markets for biofuels, which will lead to increased economic opportunities. This will ultimately help the city become a more sustainable and environmentally friendly place to live as Portland has taken the lead in striving for sustainability over the years.

The policy will also help create jobs in the biofuel industry and provide opportunities for businesses to switch to renewable energy sources. It will also help reduce the city’s dependence on fossil fuels and protect the environment for future generations.

Want to learn more about meeting Portland’s requirements for the Renewable Fuel Standard mandate?

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landscape view of Mount Hood representing Star Oilco’s fuel delivery service area in Oregon

Focus on Lower-Emission Biofuels

Uniquely, Portland’s RFS goes beyond just the biofuel blend. It also sets a strict carbon intensity (CI) standard for the biofuels themselves. This ensures the biodiesels used have a significantly lower carbon footprint compared to traditional options. Biodiesels produced domestically often fall short of this CI requirement, prompting many suppliers to look to renewable diesel sources. This focus on biofuels with a lower lifecycle carbon footprint makes Portland’s RFS even more impactful in reducing greenhouse gas emissions.

Iconic Portland sign on Broadway at dusk with city buildings in the background

Exemptions and Implementation Details

The initial phase of the RFS targets on-road diesel sales. This applies to diesel purchased at gas stations, by mobile fueling companies, and for use in large stationary tanks. However, the long-term goal includes all diesel use within the city. Some temporary exemptions apply to off-road diesel uses such as heating oil, generator fuel, aircraft fuels, watercraft fuels, and other dyed fuel users. One local truck stop, Jubitz Truckstop, was granted a temporary exemption. This is likely due to concerns about disrupting critical transportation operations. Daimler (the manufacturer of Freightliner and Western Star trucks) has a research facility in Portland. Daimler was also granted an exemption to meet their specific fuel needs for testing purposes. 

The RFS enforces compliance through fuel sampling and requires documentation proving the fuel meets the minimum biofuel content and CI standards. Businesses that purchase diesel need to be able to show their compliance through bills of lading (BOLs) or similar records from their fuel provider, like Star Oilco. If a business does not comply and provide this documentation, it can result in pretty hefty fines. First offenses can be a fine of $10,000 per day. Repeat offenders will end up facing even bigger penalties of up to $15,000 per day. These fines can really show the impact of how serious Portland is taking this initiative. 

Impact on Businesses and Consumers

While residential consumers who don’t purchase diesel directly are not directly impacted, businesses purchasing diesel, especially in bulk, will need to adapt to the new regulations. This may involve acquiring documentation from fuel suppliers or entering into contracts guaranteeing compliant fuel blends. Wholesale fuel distributors, who sometimes purchase from multiple vendors and blend fuel mid-route, may face additional challenges in tracking the biofuel content and CI of their product. However, as the program matures, the industry is expected to adapt and streamline these compliance procedures.

Contact Us Today To Discuss What This Means For Your Business

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A Step Forward for Cleaner Transportation

Portland’s ambitious RFS sets a new expectation for sustainable transportation. Promoting low-carbon biofuels allows Portland to aim to significantly reduce its reliance on fossil fuels and be able to contribute to cleaner air for its residents. The RFS program will be able to serve as a model for other cities that are looking at implementing similar initiatives. Great job Portland for paving the way to a sustainable future for other cities! Although challenges will remain, as businesses adapt to this new norm, Portland’s RFS represents a significant step forward in creating a more sustainable transportation sector.

The RFS program is an important step in the fight towards sustainability and lower carbon fuels. It sends a clear message that cities are willing to take action to reduce emissions and protect the environment. We anticipate that other cities will follow Portland’s lead and create similar initiatives. This will have a significant impact in reducing emissions and helping to protect the environment.

It is a positive step towards a more sustainable future. Alternative fuels have become more and more readily available. Investing in alternative fuels and reducing carbon emissions is essential for protecting the planet for future generations. Governments should prioritize investing in renewable energy sources and incentivize communities to switch to alternative fuel solutions.

Thank you for choosing Star Oilco as your preferred fuel provider in Portland and Vancouver, Washington. Give us a call to discuss how the RFS mandate can affect your business and one of our team members would be happy to discuss this with you.

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Diesel Exhaust Fluid (DEF) Quality, Storage, and Future Considerations 1024 1024 Star Oilco

Diesel Exhaust Fluid (DEF) Quality, Storage, and Future Considerations

Have you ever noticed that Diesel Exhaust Fluid (DEF) often lives in the background until suddenly it’s the reason your fleet can’t meet emissions standards or a system clogs up? DEF quality and storage isn’t just technical noise, it’s vital for keeping your SCR system happy and your operations rolling smoothly. We want to share with you what makes DEF high quality, the best ways to store it, and what trends are shaping its role in diesel emissions systems moving forward.

Diesel Exhaust Fluid (DEF) is a crucial component in modern diesel engines equipped with Selective Catalytic Reduction (SCR) systems. While many fleet operators are familiar with its basic function of reducing nitrogen oxide (NOx) emissions, understanding the intricacies of DEF quality, storage, supply chain considerations, and system maintenance can help businesses optimize efficiency and avoid costly repairs. At Star Oilco, we provide fleets with the knowledge and resources needed to navigate these complexities. This guide will explore the advanced aspects of DEF, from maintaining quality and ensuring proper storage to understanding emerging trends in emissions technology. 

Understanding DEF Quality and Purity 

 The quality of DEF plays a significant role in the performance and longevity of an SCR system. DEF must adhere to ISO 22241 standards, which regulate its composition, concentration, and purity. Using non-compliant DEF can lead to injector clogging, crystallization, and system failures. Even small amounts of contaminants such as dirt, fuel, or water can negatively impact DEF performance and damage expensive SCR components. 

To ensure DEF meets the necessary standards, regular testing should be performed. Refractometers can measure the urea concentration to verify the correct 32.5 percent solution. DEF testing strips can detect impurities, while more advanced lab analysis can help diagnose performance issues related to fluid quality. Purchasing DEF from a reliable, ISO-certified supplier is the best way to avoid contamination and maintain compliance. 

DEF Storage Best Practices to Prevent Contamination 

Proper storage is essential for maintaining DEF integrity. Temperature control is a key factor, as DEF should be stored between 12 and 86 degrees Fahrenheit to prevent degradation. Freezing does not damage DEF, but extreme heat can cause evaporation and reduce its effectiveness. To minimize exposure to environmental factors, DEF should be stored in opaque, UV-resistant containers to prevent sunlight from breaking down its chemical properties. 

Choosing the right storage material is also critical. DEF should be kept in plastic or stainless steel containers, as certain metals such as aluminum, copper, and zinc react with DEF, leading to contamination. Additionally, keeping storage containers sealed will prevent air exposure, which can introduce dust or debris. Managing inventory efficiently is another important aspect of storage. DEF typically has a shelf life of 12 months, but in warmer climates, its lifespan may be reduced to six months. Using a first-in, first-out (FIFO) inventory approach ensures that older stock is used before it degrades. 

Regular inspections and cleaning of storage equipment are also recommended to maintain DEF purity. Be sure to check for residue buildup, leaks, or any signs of contamination in tanks, nozzles, and dispensing systems. Training staff on proper handling procedures can further reduce the risk of accidental contamination. By taking these proactive steps, you can ensure your DEF stays clean, effective, and ready to support emissions compliance.

DEF dispensing station pump showing control panel, hose, and DEF push button

How Temperature Affects DEF Performance 

Temperature fluctuations can significantly impact DEF performance. In cold climates, DEF freezes at 12 degrees Fahrenheit, causing operational challenges for fleets. While frozen DEF does not degrade, it must be properly thawed before use. Heated DEF dispensers and insulated storage solutions can help prevent freezing issues in extreme weather conditions. It is important to avoid adding water to thaw frozen DEF, as this disrupts the precise urea concentration and compromises its effectiveness. 

On the other end of the spectrum, high temperatures can cause DEF to degrade. Exposure to prolonged heat above 86 degrees Fahrenheit can lead to evaporation and an increase in urea concentration, which may result in improper dosing and SCR malfunctions. Storing DEF in shaded or climate-controlled areas can help mitigate heat-related degradation. Seasonal changes also impact DEF consumption rates, with colder temperatures often leading to increased DEF usage as SCR systems adjust to lower combustion efficiencies. 

DEF Supply Chain Considerations 

DEF relies on a stable global urea supply, making it susceptible to market fluctuations. Since urea is also used in fertilizer production, shifts in agricultural demand, export restrictions, and production slowdowns can lead to price increases and supply shortages. In times of high demand, fleets may struggle to secure sufficient DEF, leading to increased costs and operational challenges. 

To avoid supply disruptions, fleet operators should consider strategic sourcing options. Establishing relationships with reliable DEF suppliers and securing bulk deliveries can help mitigate the risk of shortages. On-site DEF storage solutions can also provide a buffer against market volatility, allowing businesses to maintain an adequate supply without relying on just-in-time purchasing. Planning ahead for seasonal or industry-wide fluctuations in DEF availability can help fleets remain operational without unexpected expenses. 

The Economics of DEF for Fleet Operations 

DEF consumption is directly tied to diesel fuel usage, with most fleets using approximately two to three percent DEF per gallon of diesel burned. Understanding this ratio allows businesses to budget accordingly and monitor costs. Optimizing fuel efficiency can also lead to lower DEF usage, as well-maintained engines operate more efficiently and require less NOx reduction. 

Using high-quality DEF prevents costly maintenance issues. Non-compliant or contaminated DEF can cause injector clogging, pump failures, and SCR system malfunctions, resulting in expensive repairs and downtime. Some manufacturers void engine warranties if improper DEF is used, making it even more important to source DEF from a certified provider. Preventative maintenance and regular DEF quality testing can help fleets avoid hidden costs associated with poor-quality fluid. 

DEF System Failures: Causes and Prevention 

Common DEF system failures can be traced back to improper handling, storage, and contamination. Crystallization, for example, occurs when DEF is exposed to air and loses moisture, leaving behind solid urea deposits that can clog injectors and sensors. Contaminated DEF can lead to buildup in the SCR system, affecting performance and triggering warning lights that may lead to vehicle derating or shutdown. 

Preventing DEF system failures requires proactive maintenance. Regularly flushing DEF tanks, inspecting nozzles for blockages, and ensuring proper storage conditions can help prevent these issues. Using ISO-certified DEF from a trusted supplier also reduces the risk of contamination. Scheduled maintenance checks and SCR system inspections allow fleet operators to address minor issues before they escalate into costly repairs. 

The Future of DEF and Emissions Technology 

As emissions regulations continue to evolve, the role of DEF in diesel technology is likely to expand. The Environmental Protection Agency (EPA) continues to push for stricter NOx reduction targets, which may lead to advancements in SCR systems and increased DEF usage. Some manufacturers are exploring alternative NOx-reduction methods, such as ammonia-based catalysts or hydrogen fuel cell technology, but DEF remains the most effective solution for modern diesel engines. 

While DEF will remain a key component of emissions compliance for the foreseeable future, fleet operators should stay informed about regulatory changes and advancements in emissions technology. Investing in high-quality DEF and optimizing storage and usage practices will help businesses stay ahead of evolving environmental standards. 

DEF Myths and Misconceptions 

Several misconceptions about DEF persist, leading to improper use and maintenance practices. One common myth is that water can be added to DEF in emergencies. This is incorrect, as dilution disrupts the precise 32.5 percent urea concentration, rendering it ineffective and potentially damaging the SCR system. 

Another common belief is that DEF improves fuel efficiency. While DEF itself does not enhance fuel economy, it allows for optimized engine performance by reducing backpressure in the exhaust system. This results in better combustion efficiency, which can lead to slight improvements in fuel usage. 

A final misconception is that DEF does not expire. In reality, DEF has a shelf life and degrades over time, especially when exposed to heat or contaminants. Proper storage and inventory management are essential to maintaining DEF quality. 

How Star Oilco Ensures High-Quality DEF for Customers 

Star Oilco provides high-quality, ISO 22241-certified DEF to ensure fleets remain compliant and operational. Our bulk DEF delivery services allow businesses to secure a reliable supply, reducing the risk of shortages and minimizing costs. We also offer on-site DEF storage solutions to help fleets manage their inventory efficiently. 

In addition to supplying high-quality DEF, we assist customers with DEF system maintenance, testing, and best practices to ensure long-term reliability. With our commitment to quality and service, Star Oilco is the trusted partner for businesses looking to optimize their DEF usage and reduce the risk of SCR system failures. 

We also help customers stay up to date on regulatory changes and evolving DEF standards to ensure full compliance. Whether you’re a small fleet or a large operation, our team is ready to tailor a DEF solution that meets your specific needs.

For more information on our DEF solutions, contact Star Oilco today to learn how we can help keep your fleet running efficiently while meeting emissions compliance standards. 

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Frequently Asked Questions

What exactly does DEF do in my diesel engine?

DEF (Diesel Exhaust Fluid) is injected into the exhaust stream of modern diesel engines equipped with Selective Catalytic Reduction (SCR) systems. It reacts with exhaust gases to convert harmful nitrogen oxides (NOx) into harmless nitrogen and water vapor. This process dramatically cuts emissions, keeping your fleet compliant with strict EPA standards.

How long does DEF last in storage?

Stored properly, DEF generally has a shelf life of up to 12 months. However, exposure to heat can shorten this to 6 months or less, especially in warmer climates. That’s why using a first-in, first-out (FIFO) system is crucial. It ensures older DEF is used before it degrades, protecting your SCR systems from concentration issues that could cause costly repairs. 

How much DEF does my fleet actually use?

Most fleets use about 2-3% DEF relative to diesel fuel burned. That means for every 100 gallons of diesel, you’ll consume roughly 2 to 3 gallons of DEF. Knowing this ratio helps you forecast DEF needs alongside your fuel budgets.

Does DEF improve my fuel economy?

Not directly. DEF doesn’t boost fuel economy on its own. However, by reducing exhaust backpressure through the SCR process, your engine can operate more efficiently, which may lead to slightly better combustion and fuel performance over time. 

Can DEF expire even if it’s stored properly?

Yes. DEF naturally degrades over time, even under ideal conditions. Keeping it cool, sealed, and protected from UV rays slows this process, but eventually it ages out. That’s why FIFO inventory management and routine checks of DEF age are important to avoid using degraded product.

Why does DEF usage increase in colder weather?

Colder temperatures can make diesel engines burn less efficiently, leading the SCR system to dose more DEF to keep NOx emissions in check. This seasonal variance is normal, but it means winter months may see DEF usage spike slightly higher than your average.

How might future EPA emissions standards impact my DEF usage?

Regulations on NOx emissions are only getting tighter. This means future SCR systems could demand even more precise DEF dosing, or fleets might see an overall increase in DEF consumption. Staying committed to quality DEF, proper storage, and system maintenance now will help keep you ahead of regulatory curves and avoid penalties later.

How does Star Oilco help prevent costly DEF-related issues?

We supply only ISO-certified DEF, deliver it in bulk or packaged form, and provide on-site storage solutions to keep your operations protected. Our team also supports customers with DEF quality testing, maintenance guidance, and proactive system checks to help you avoid breakdowns, warranty headaches, and surprise costs.

comparison chart showing difference between off-road diesel and on-road diesel fuel in Portland OR
The Future of Diesel Fuel 940 788 Star Oilco

The Future of Diesel Fuel
Retail Diesel Dispenser Example
Retail Diesel Pumps with a variety of blends of diesel. Biodiesel, Renewable Diesel, and Fossil Diesel blends shown in Portland, Oregon.

The Future of Diesel is Low CO2 Synthetic Fuels

The stew of molecules your diesel is made of has been changing. A next level technology in chemistry is enabling garbage to be transformed into hydrocarbon fuels like diesel, jet fuel, naphtha, and propane as well as other high value chemicals. These technologies enable petroleum refineries in the United States to retool themselves and move into making biofuels with the very technology used to refine modern gasoline and diesel fuels from crude oil.  Currently oil refineries take crude petroleum and crack the molecules and reform them with a hydrotreater.  This hydrogenation is what makes renewable diesel from fats, oils and greases.

If you have ever worked under your sink at home. Remember the greasy mess inside the pipes below your kitchen sink.  These renewable hydrogenation technologies can turn that trash into a super clean high performance synthetic diesel fuel.  That waste stream along with used deep fryer oil, the animal fats from rendering and other sources is the feedstock for renewable diesel.  It is exciting and this will be the future of our diesel and jet fuels.  These fuels also have a fraction of the CO2 footprint of a fossil fuel equivalent as measured by Oregon, Washington or California’s rules to measure the carbon intensity of fuels.

Diesel Fuel in Oregon and Washington

Star Oilco has been getting questions on the changes of diesel in Portland, Oregon.  If you have not noticed, many diesel pumps at retail gas stations and cardlock have seen changing stickers on the face of the fuel pumps.  As of July 1st, 2024 the City of Portland requires a minimum 15% biofuel content of all diesel sold.  This policy is called the Portland Renewable Fuel Standard.  Portland currently plans to ramp up this requirement to a 50% biofuel blend in May of 2026.  So that every gallon of diesel sold inside the City of Portland must be half biomass based diesel products blended with fossil diesel.

This has caused quite a few changes in what fuel pumps have as their fuel for sale.  Usually people notice this change with teh color of the diesel coming out of the retail nozzle.  Diesel fuel buyers are noticing the bright yellow color of B20 biodiesel, the fully clear color of Renewable Diesel or a mix of several fuels tinting the color of their diesel.  This trend is bigger than just Portland.

Today on the west coast there are a variety of product label stickers you will see on diesel pumps.  These show the variety of diesel fuel specifications that are being sold to diesel vehicles today. Blends of petroleum ultra low sulfur diesel, R99 (99%) renewable diesel, and B99 (99%) Biodiesel are combined to meet the market needs of the diesel we all buy.

This change is because of a combination of pure market forces, government rules and local decisions by fuel haulers.  Today’s diesel not only has a commodity market for the fuel it also has a market for CO2 credit value and a cap of total petroleum diesel fuel that can be sold into a west coast state with a “Cap and Invest” program requiring blends of low CO2 biofuels, the liquid fuels sold for vehicles.

Add on top of these market forces, advances in technology used to make the liquid diesel fuel.  The diesel arriving at truck stops, gas stations, cardlock or out of a hose from a bulk truck has been changing and it’s often in good ways.  Knowing how can be helpful in navigating why diesel may cost one price or another and may have a need or maintenance that another fuel does not.

THE RISE OF RENEWABLE DIESEL

Renewable diesel, also called R99 as in 99% renewable diesel, is a synthetic diesel fuel made from the same feedstock as biodiesel. The big difference though is that renewable diesel’s finished product is hydrocarbon diesel.  Biodiesel chemically is not a hydrocarbon or made up of diesel molecules.  Renewable diesel is a biofuel, but it is also chemically diesel on a molecular level. For fuel regulation they refer to it (as well as biodiesel) as “Biomass Based Diesel” for labeling at the fuel pump.

There have been billions of plant capacity brought online in the United States for renewable diesel.  During the COVID market drop in fuel prices a number of petroleum refineries shut down, then upgraded their technology to make hydrocarbon diesel fuels out of the very biobased fats, oils, and greases biodiesel is made from.  These refineries use hydrotreating technology just like they do with a crude petroleum to make an actual hydrocarbon diesel molecule.   With this technology adoption to make diesel and jet fuels from vegetable oils and animal fats billions of gallons of low CO2 diesel fuels are coming on the market and governments are requiring it’s use, such as Portland’s Renewable Fuel Standard.

Renewable Diesel Consumption it the US Source: Alternative Fuels Data Center

THE AVAILABILITY OF BIODIESEL

The US makes billions of gallons of biodiesel.  A fuel that’s quality and performance continues to improve.  If you are not a fan of biodiesel in your fuel thinking strategically about the fuel will likely benefit your fleet operation.  The big concern with diesel fuel in a ultra low sulfur world is water and dirt suspended in the fuel affecting the performance of diesel emission systems.  With clean and drier quality specifications of B99 blend stocks today versus a decade ago the use of this fuel has grown substantially especially in the truck stop market.

When crude petroleum prices are high and therefore refined diesel prices are equally as high biodiesel is often an extremely competitive fuel.  Recently changes in Federal subsidies on biodiesel have changed this market dynamic a bit but you can presume that biodiesel will often be sold at a discount against fossil fuel diesel.  If a large seller of diesel (including petroleum refiners) can pick up pennies per gallons on millions of gallons sold they will do so.  Therefore Biodiesel is often seen in diesel in small blends even if you do not see a label on retail pump.  For blends above 5% a label is required for retail fuel sales.

R99 Renewable Diesel label indicating 99% biomass-based diesel content
Ultra Low Sulfur Retail Diesel Label
Biodiesel Blend Percentage label for retail diesel dispenser

Above are a variety of labels used to denote what fuel blend is coming out of a retail diesel dispenser. Feel free to call Star Oilco at 503-283-1256 if this confuses you and you want it explained.  We would be glad to do so.

These labels can be found together often at one pump.  All state and Federal standards require ultra low sulfur diesel for any on-road diesel sale.  The Federal standards also adopted by the states require a disclosure at the fuel pump if a blend is above 5% biodiesel.  The max allowable blend of biodiesel for diesel truck manufactures is a 20% blend.  If a truck dealership says that you cannot blend biodiesel up to 20% they need to take that up with the Federal Government because they need to support it.  This is why the label shows a blend may contain between 5% and 20% biodiesel content.

Renewable diesel is a hydrocarbon diesel. 

 

It is diesel meeting the ASTM D975 specification for diesel. 

Retailers selling blends of R99 in their fuel do not need to label it given this.  They still do label it given the benefits of the fuel’s performance and that customers are seeking that fuel.

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Many retail places will have stacked labels showing they may be blending 5% to 20% biodiesel as well as may be adding R99 Renewable Diesel to the fuel as market conditions dictate it is the more cost competitive fuel.  When seeing a label like this it can usually be assumed they are blending a R80 (80% Renewable Diesel) and a B20 (20% Biodiesel) blend of fuel.  This blend is actually believed by some to be a higher performing fuel seeing better performance that a R99 or B20 fossil fuel blend.

Fossil fuel diesels are being replaced or blended with biomass based diesels.  Be it Renewable Diesel or Biodiesel.  These blends are driven by more than one industry requirements, government rules, or other market forces. One of these being Portland’s banned on petroleum diesel through the Renewable Fuel Standard (RFS). This is resulting in an increase of low-carbon biofuel blends that will ultimately move to a mix of 99% renewable fuel requirement by 2030.

Renewable Diesel and Biodiesel Blend fuel dispenser label.

The big drivers are industry specification for fuels (both labeling as well as chemical characteristics), state rules on selling these fuels, their quality assurance as well as CO2 content, and of course the market forces.  Market forces being the supply and demand availability of fuel needed to meet customers.  Less fuel available to sell means higher prices for customers.

A decade ago the market for diesel was far simpler. Though you had biofuels and some blend mandates basically you had a diesel specification accepted and the daily price as tracked by a lighted retailers sign, a wholesale market average or spot buying by some customers.   Today this market is far more complicated by government regulation on the west coast.  There are three big programs at state levels impacting this.

State Fuel Rules cause a unique need for one state or another. Whereas twenty years ago if Oregon or Washington fuel was selling for more than the Gulf Coast you might see brokers bring fuel into the region then driving down high prices.  With the creation of various complex and unique rules on diesel, imports of fuel to these low CO2 fuel states has dropped.  The amount of people moving product into west coast states has dropped.  The big rules causing this are the Cap and Invest programs of the West Coast states, the Low CO2 Fuel Standards of the states, and the fuel blend mandates of various jurisdictions of these states. For instance California now requires all off-road diesels but 99% renewable diesel.  Portland, Oregon also has a CO2 requirement and minimum 15% blend of biomass based diesel on all fuel sold in the state.

WHAT ARE THE DIESEL FUELS AND THEIR SPECIFICATIONS

Petroleum Diesel:
ASTM D975 Specification.

The ASTM D975 is a series of tests used to maintain consistent industry standard product performance for diesel fuel.  It includes among several tests cloud point, cold filter plug point (CFPP), several masurements of diesel fuel operability performance, intrained water content, sediment, carbon residue, ash, distillation, viscosity, sulfur, copper corrosion, cetane number, cetane index, aromaticity, and conductivity.

Renewable Diesel:
ASTM D975 Specification.

Renewable Diesel is following the same series of tests as petroleum refined diesel fuels.  It is the same ASTM D975 specification. Though Renewable Diesel has some different properties that exceed the ASTM specification of diesel.  Renewable Diesel is highly prized as a fuel because it typically is a cleaner and drier diesel fuel than petroleum diesel. This being seen by the tests on sediment and water content in a parts per million level.  Renewable Diesel content in diesel fuel can also be tested for looking for a C14 molecule (the chain typically created in a Hydrotreated Diesel process from fats, oils and greases.

Biodiesel (Methyl Esther):
ASTM D6751 Specification.

The ASTM for Biodiesel tests a mono-alkyl esters of long chain fatty acids derived from vegetable oils and animal fats. The testing for quality assurance covers an analysis for flash point, methanol, water and sediment, kinematic viscosity, sulfated ash, oxidation stability, sulfur, copper strip corrosion, cetane number, cloud point, acid number, carbon residue, total and free glycerin, phosphorus, reduce pressure distillation temperature, atmospheric equivalent temperature, combined calcium and magnesium, and combined sodium and magnesium.

For more on Biodiesel Use and Handling the National Renewable Energy Laboratory has a great book on the subject.

THE HISTORY OF DIESEL FUEL SPECIFICATIONS IN THE UNITED STATES

In the 1990’s the US EPA passed rules that demanded a phase out of sulfur in diesel fuel.  The presence of sulfur was very good for the fuel’s storage stability as well as fuel lubricity, but was horrible for air quality.   Additionally the big smog contributor was NOx (nitrous oxide) which was one of the EPA’s reason’s for pulling sulfur out of diesel.  For the EPA to get engine manufacturers to treat the NOx emissions at the tailpipe they needed all the sulfur gone (ultra low sulfur diesel) for modern diesel emission systems to be able to eliminate NOx as well as a host of other pollutants including particulates.

The story of changing diesel fuel standards in the US under the EPA is one of removing sulfur from our diesel fuel.  In 1996 the fuel refiners and sellers of diesel had to move the sulfur content of the fuel sold for on-road purposes to below a 500 parts per million standard. Commonly referred to as Low Sulfur Diesel fuel.   In 2006 the standard moved to a maximum of 15 parts per million of sulfur for all on road fuels.

In 2006 while the sulfur content of fuel was dropping the City of Portland released the first mandated blend of biodiesel content.  This being a 5% biodiesel blend.  The next year, the State of Oregon followed with its own Renewable Fuel Standard requiring this throughout the state.  This began the expectation of biodiesel in most diesel fuel in the Portland, Oregon area.  Washington also passed a similar policy for blending biodiesel but the enforcement and need for the fuel is less specific at Washington fuel pumps.

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Star Oilco truck refueling off-road diesel at a job site in Portland OR
Every Question We Have Been Asked About Renewable Diesel 1024 768 Star Oilco

Every Question We Have Been Asked About Renewable Diesel

Renewable Diesel Frequently Asked Questions (FAQ)

Every Question we have been asked about Renewable Diesel

What is renewable diesel?

Renewable diesel is a synthetic diesel fuel, known for it’s lower CO2 characteristics, typically seeing purity and real world performance response superior to petroleum diesel fuel.  Renewable diesel is a next generation hydrocarbon diesel biofuel made by either the Fischer-Tropsch or Hydrogenation processes.

Hydrogenated renewable diesel is made by taking fats, oils, and greases by use of a hydro-treater.  The biomass based oil or fat is cracked and reformed in the presence of hydrogen and  catalyst forming a hydrocarbon diesel molecule.

Fischer-Tropsch renewable diesel is used by converting any btu dense feedstock (wood waste, woody biomass, municipal garbage, coal, and an endless list of low value waste products into syngas, then converting this into a wax that is reformed into hydrocarbon diesel.

Is it true that Renewable Diesel reduces CO2 emissions by more than half?

It depends on the feedstock and processes that determine the fuel pathway.  But for the most part it is safe to presume that if you use a R99 Renewable Diesel product in Oregon that it will have a lower than 50CI which would cut the CO2 emissions in half versus an equivalent gallon of gasoline used.  Sometimes Renewable Diesel can be blended with fossil fuel diesel as well as biodiesel.  Star Oilco currently presumes 99% renewable diesel is the fuel being used when describing Renewable Diesel and “cutting emissions in half” as a claim, backed up by the scientific data associated with the Oregon Clean Fuels Program and its pathways.

According to the Oregon Clean Fuels Program list of pathways for Renewable Diesel approved to be sold in Oregon shows the lowest CO2 value to be 16.36 CI and the highest to be 65CI.  Most, nearly all, of the Renewable Diesel pathways in Oregon are below 50% reduction in CO2 emissions associated with the fuel.  You can see these by reviewing the downloadable spreadsheet of “Fuel Pathways – Carbon Intensity Values” available on the left hand side of the Oregon Clean Fuels Program website under the heading “Participating Facilities” as an easy sharable link is not available.

To learn more about this please see the Oregon Department of Environmental Quality’s Clean Fuels Program page where CO2 emission pathways are disclosed for renewable fuels distributed in Oregon.  The system used to measure CO2 emissions and reduction is a modified Oregon “GREET” model.  GREET stands for Greenhouse gas, Regulated Emissions, and Energy Use in Technology. The GREET scientific system to review CO2 emissions was developed by the US Department of Energy and similar systems are used by California and Washington in their Low Carbon Fuel Standards as well.

Is HVO or Hydrogenated Vegetable Oil the same as Renewable Diesel?

Yes.  HVO is either R100 or R99 renewable diesel. The reason you will hear the phrase HVO or Hydrogenated Vegetable Oil instaed of renewable diesel is that the regulations and various incentives for renewable diesel have restrictions.  If renewable diesel is used in stationary power generation it is treated differently for the various subsidies and incentives.  The regulations on fuels for vehicles and equipment differ compared to utility scale power generation.  For this reason the power generation industry will refer to renewable diesel as “HVO” to denote it’s end use.

Is Sustainable Aviation Fuel or “SAF” the same as Renewable Diesel?

No.  Sustainable Aviation Fuel or “SAF” is a Jet A specification or a Number 1 diesel fuel. A Number 1 diesel fuel can be mixed with Number 2 without impacting it’s specification requirements.  Number 1 though cannot be mixed with Number 2 diesel weights and stay in specification.  It is a lighter end than Number 2 diesel meaning it has a different specific gravity weight of the fuel.   So in short SAF can be used as Renewable Diesel but has a much higher standard to meet than is required for Renewable Diesel. Therefore the products are very different based on this need for quality assurance to meet the aviation jet fuel specification.

There is a huge demand for Sustainable Aviation Fuel and many of the current Renewable Diesel plants in operation are upgrading their technology to make SAF.  It is expected that in the hydrotreating processes to make renewable diesel and SAF, the Jet A fuel specification is a harder one to produce.  So as the refining of SAF increases we will expect to see subgrade SAF (product made to be SAF that does not meet the standard) be moved to the Renewable Diesel market.  We will not see Renewable Diesel being used in jets though.

Can Renewable Diesel be used as Heating Oil?

Yes.  Renewable Diesel is a synthetic hydrocarbon diesel fuel.  It can be used interchangeably with petroleum diesel products of similar grade. Heating Oil is typically number 2 diesel which is the same specification as Dyed R99 Renewable Diesel (or blends of Renewable Diesel with petroleum diesel).   Star Oilco now offers R99 Heating Oil delivered in the Portland metro region area of Oregon.

Most modern oil heat appliances use a Becket Burner.  For more on heating fuel compatibility with oil furnaces and oil burning appliance please see “Alternative Fuels and Becket Burners” for more information.

Why do people use renewable diesel over petroleum diesel?

Fleet managers operating R99 Renewable Diesel report a lower mechanical cost of operation using the fuel.  Beyond the immediate benefit of R99 cutting CO2 emissions by half or more, fleets experience performance benefits from the fuel.  The big savings are seen the the performance of Tier 4 Emission systems on modern diesel seeing far less wear of the Diesel Particulate Filter system as well as far fewer regenerations of the system.  Additionally Renewable Diesel is a very clean and dry diesel fuel improving the storage stability, field operation, and general predictability of the fuel’s performance.

How do I know Renewable Diesel is being sold at a retail location?

Renewable Diesel is a hydrocarbon diesel that meets the specification for petroleum diesel known as ASTM D975 specification.  This means currently R99 can be readily blended and sold with petroleum diesel without a disclosure.  The US Federal Trade Commission and local state Weights and Measures have rules for retail pump labeling.  Blend percentages of biomass based diesel must be labeled especially if being advertised.  As R99 Renewable Diesel has a higher value and is sought out by many consumers though usually it is disclosed.  The pump labeling for R99 Renewable Diesel typically looks like the below.

R99 Renewable Diesel fuel dispenser label

What is renewable diesel made of?

Renewable diesel can be made from a host of things, usually a low value waste product. The most common feedstock used currently is waste vegetable oil, wastes from animal rendering, and other biologically derived oils. Processes using bio-oils are following a Hydrogenation process to turn low value waste oils into high value diesel and jet fuel.

Chevron Renewable Energy Group and Diamond Green Diesel (Diamond Green is in a joint venture with Valero) are the largest producer of renewable diesel with their REG Ultra Clean Diesel product in the United States. Neste is the largest producer of renewable diesel internationally, with its “Neste My” product.  being the two largest producers of low CO2 bio-oil derived renewable diesel fuels.

Major petroleum refiners have also turned around existing petroleum refineries into Renewable Diesel Refineries to produce this in demand low CO2 fuel. HF Sinclair , Marathon, Phillips 66, and Montana Renewables. There are quite a few newer Renewable Diesel projects planned and in progress around the United States as well as in the Pacific Northwest.

Other refiners of renewable diesel (on a much smaller scale of production) are using a Fischer-Tropsch process with wood waste, sorted higher grade municipal garbage, and other high btu value carbon based waste products.  Many expect this to technology to be the future of all diesel and jet fuel refining turning refuse into fungible low carbon fuel.

What is renewable hydrocarbon diesel?

Renewable hydrocarbon diesel is a synthetic diesel fuel made from non-petroleum feedstocks like vegetable oil, animal fats, municipal waste, agricultural biomass, and woody biomass. It is characterized by having a low CO2 and renewable resource for its feedstock and is made without crude petroleum, coal, or natural gas as a direct feedstock input in the refining process.

How do they make renewable diesel?

Renewable diesel is made by several processes. If you are buying renewable diesel, it is probably from a Hydrogenation process used by Renewable Energy Group and Neste for their products. Other smaller volume producers are using a Fischer-Tropsch process or Fast Pyrolysis. Both processes involve taking energy dense molecules, cracking those molecules under heat and pressure, then reforming them in the presence of a catalyst and added hydrogen, which forms a renewable diesel molecule.

Is renewable diesel a lower carbon fuel compared to petroleum diesel?

Yes, to this point all renewable diesel made from renewable feedstocks have appeared to be a lower CO2 fuel compared to petroleum diesels. The California Air Research Board in particular has done research on this in depth.

The low CO2 lifecycle emissions of Renewable Diesel also is tracked closely and supervised by California’s Low Carbon Fuel Standard, Washington’s Low Carbon Fuel Standard, and Oregon’s Clean Fuels Program. The highest value markets for low CO2 fuels in the United States are California and Oregon, which both have mechanisms that track and price the CO2 intensity of diesel fuels as well as the sustainable lower CO2 substitutes and blend-stocks that can go in those diesels. They track, rate, and determine the carbon intensity of the fuels providing a neutral and scientifically defensible number for CO2 reduction.

Is renewable diesel available in Oregon?

Renewable diesel is readily available for delivery from Star Oilco throughout the Pacific Northwest via 10,000 gallon volumes of bulk delivery.   Star Oilco is also offering bulk delivery of any size and mobile onsite fueling service within 100 miles of the Portland, Oregon market.

Star Oilco has R99 Renewable Diesel available with a Star Oilco CFN Cardlock card in Portland, Oregon.

What is the difference between biodiesel and renewable diesel?

Biodiesel and renewable diesel are very different fuels made with very different processes. In a nutshell, biodiesel is made with a simple chemical reaction that turns vegetable and animal fats into fuel. Renewable diesel is made from far more complicated process where vegetable and animal fats (as well as other feedstocks) are cracked on a molecular level and built back into synthetic diesel fuel.

What is the difference between renewable diesel and Sustainable Aviation Fuel?

The difference between the fuels is the specific gravity and general specification for what the fuel is used for. Jet fuel, or Sustainable Aviation Fuel, and on-road diesel fuel are different fuels and therefore have different specifications. Renewable diesel is typically referring to a #2 diesel specification for on road diesel use.

Sustainable Aviation Fuel or “SAF” is typically referring to “Jet A” or “JP8” jet fuel specification for fuel. This is a #1 diesel range fuel with use and handling requirements that are far more stringent than for on-road or off-road diesel fuels. Renewable jet fuel can be used as a kerosene or #1 diesel fuel but renewable diesel cannot be used as a jet fuel.

Where do I buy renewable diesel in Oregon or Washington?

Renewable Diesel is currently available for bulk delivery and mobile onsite fueling. It will soon be offered at commercial cardlock in the Portland area. It is being sold as R99 and as Ultra Clean Diesel, which is a mixture of biodiesel, renewable diesel, and petroleum diesel.

What is R99?

R99 stands for 99% renewable diesel and 1% petroleum diesel.  Federal rules over alternative diesel fuels made fuels requires that manufacturers of non-petroleum derived diesel fuels must blend a minimum 1% petroleum with the fuel to generate a Renewable Industry Number or “RIN” under the US Federal Renewable Fuel Standard. Additionally there are other incentives that require a “blender of record” to receive these tax credits.

Is renewable diesel being made in Oregon?

As of Spring 2022, renewable diesel is not being manufactured in Oregon. There is a major projects underway, Next Renewable Fuels in Port Westward, Oregon.

What is renewable diesel made from?

Renewable diesel can be made from many energy dense carbon based material.  By volume of produced product sold in the United States, vegetable oils and animal fat-based wastes are the most common feedstock. Woody biomass, agricultural wastes, and sorted municipal wastes are also sources for renewable diesel production.

Is renewable diesel made from palm oil?

Palm oil can be used as a feedstock for renewable diesel. There are producers who use palm oil as a feedstock. In the United States, feedstocks and carbon intensity are tracked closely under both Oregon and California’s fuel programs.  You can determine if a supplier is using palm oil as a feedstock through these regulated pathways.

How much does renewable diesel cost?

This is a tough question to answer given there are several markets intersecting.  From the feedstocks to the market demand for the finished product as well as both California and Oregon’s Clean Fuel Standards which place a price on the CO2 intensity of the fuel which reduces the cost of the fuel if consumed in Oregon and California.

It has consistently been trending between the same cost and over $1 a gallon higher than petroleum diesel depending on the state, you buy renewable diesel in. In California, renewable diesel is very close to petroleum diesel depending on the value of CO2 credits for lower-carbon fuels. In Oregon, it has consistently been between $.05 to $.80 a gallon higher than diesel also depending on the value of CO2 abatement associated with the fuel and what these carbon credits are trading for.

When petroleum diesel costs are high Renewable Diesel tends to be more competitive with petroleum diesel.  When petroleum diesel is below $3 a gallon the cost of Renewable Diesel by comparison is usually higher unless CO2 credits are in higher than normal demand for Clean Fuels Program demands.

Can you mix petroleum diesel and renewable diesel?

Yes. Renewable diesel and petroleum diesel can be blended in any mixture without worry. They are drop-in substitutes for each other in your fleet’s use.  Renewable Diesel is a drop-in fuel. It is a hydrocarbon diesel that will work mixed with diesel or biodiesel blends of petroleum diesel.

Green fuel nozzle representing renewable diesel with Star Oilco logo - serving Oregon and Washington fleets.

Learn more about renewable diesel and how it can benefit your operations. Contact us today.

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Make And Keep Your Diesel Fuel Much More Clean 1024 768 Star Oilco

Make And Keep Your Diesel Fuel Much More Clean

                               Make And Keep Your Diesel Fuel A Lot More CleanClean, dry, premium diesel

What is Clean Diesel? 

Clean diesel is free of the contaminants that harm modern diesel engines. Today, there is a gap between ASTM diesel standards and the ISO cleanliness standards needed for use in high pressure common rail engines. Anyone operating a modern clean diesel engine is seeing the effect, including injector replacement, DPF regeneration, and a host of other fuel quality related maintenance concerns we never saw twenty years ago. On top of all of that, today’s refined diesel fuels are less storage stable than ever before. What is on the bottom of your bulk tank can also complicate matters further. When diesel is bought wholesale, it typically meets and exceeds ASTM required industry standards, but almost always requires additional filtration to avoid excessive engine wear and premature part failures.

Having clean diesel requires an additional amount of care. Namely, you need to make sure that the fuel is aggressively filtered at 4 microns to catch the microscopic particles that are big enough to damage your modern diesel engine’s high pressure fuel rail system. Furthermore, clean diesel is fuel that is free of water and stabilized with Premium Diesel to guarantee no bacteria, yeast and other creatures can grow and further contaminate the saddle tanks on your trucks.

For more on clean diesel, see Donaldson’s description of “The New Clean” for an in-depth explanation of what ISO cleanliness and filtration mean for your diesel fleet.

Making Diesel Cleaner!

Knowing the quality of your fuel is the first step. This is done by taking samples off of the bottom of your bulk storage, as well as a representative sample from your fuel dispenser. Lab tests of those samples will tell you if you have water, biological growth, or dirt issues with your storage. The contaminants in the tank being sampled are almost always visible, which is to say that they look horribly ugly. If your fuel quality assurance has been on autopilot, do not be surprised if you find this. After gathering knowledge about your fuel, the next step is to get your fuel quality clean.

Filtration and tank bottom sampling is the start. Beyond that, the only way to improve your fuel quality performance is to filter your fuel, ensure water is not getting into the tank through condensation, and additize it with a Premium Diesel additive to upgrade the performance of the fuel. Many fleets today are seeing injector wear and continual problems with particulate trap maintenance. This is a combination of water in fuel and microscopic particles not captured by a 10 or 30 micron filter used at most diesel dispensers. You have to filter more aggressively than this.

Clean, Dry, and Premium Diese

Where To Start?

The first step is sampling your bulk diesel tank. We check your bulk tank for water and dirt to make sure and meet the specifications your engine is built for. Star Oilco can help by providing a complementary diesel test for those fleets interested in taking control of their fuel quality assurance. Usually when testing fuel, we take a sample off of the tank bottom as well as a representative sample out of the fuel dispensing nozzle.

What we usually find is ASTM specification diesel fuel (it meets ASTM spec) that is higher than you’d want (still in spec) for water with far more dirt than the OEM’s would want to see in your engine. This dirt fails to be within the “ISO Cleanliness” specifications recommended by engine manufacturers. Usually, we also see water on the bottom of the fuel tank, which is a likely source for future or current biological growth in your fuel tank.

Star Oilco can help you fix this! The first step is to sample your fuel tank.

NOTE: If you have a current biological growth problem in your bulk fuel tank or fleet, your first step is to treat that effected fuel with a diesel microbiocide to kill the bugs growing in your tank. For more on this, see our Valvtect Plus 6 Diesel Microbiocide page.

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How Renewable Diesel Is Made

Renewable diesel is a type of biofuel called biomass based diesel

How Renewable Diesel is Made

How is Renewable Diesel made?

Very similarly to fossil fuel diesel.

In the 1990’s the world started moving towards an ultra-low sulfur diesel fuel specification. Over decades we have arrived to where even marine fuels are running a lower sulfur fuel. The technology used to achieve this is hydrotreating the distilled crude oils.  By use of hydrocrackers, the molecules of petroleum crude oils are cracked and reformed into ultra-low sulfur diesel.  The use of hydrotreating diesel fuels has enabled the removal of sulfur and then enabling the use of emissions systems that not only reduce acid rain but also smog causing emissions like NOx.  This advanced petroleum refining chemistry technology is the forebearer to today’s renewable diesel technologies.  The technical chemistry of taking a feedstock, cracking the molecules and reforming them into a final product is where renewable diesel comes from.

Renewable diesel is a type of biofuel that is chemically similar to petroleum diesel and can be used in any diesel engine. It can be produced from various feedstocks, such as vegetable oils, animal fats, waste cooking oil, and algae. Renewable diesel can reduce greenhouse gas emissions and improve air quality compared to petroleum diesel⁵.  The inputs for renewable diesel are typically low value but high btu value feedstocks.   From virgin soy bean and canola oils to the lowest grade municipal wastes.  The modern chemistry of today’s petrochemical industry transforms them into the highly sought fuels. 

There are two processes making renewable diesel.  Hydrogenation and Fischer Tropsch Pyrolysis.

The most common way to produce renewable diesel is by hydrotreating, commonly referred to as hydrocracking, which involves reacting the feedstock with hydrogen under high temperature and pressure in the presence of a catalyst.  Renewable diesel made with this process is often called Hydogenated Vegetable Oil (HVO). HVO and Renewable Diesel are the same fuel.  Utility scale power generation often will refer to HVO as their technical term for this low CO2 biofuel.

How HVO is made is extremely similar to crude fossil fuel.  The investments to do it also cost billions of dollars similar to the costs of petroleum refining.  Imagine a vegetable or animal fat being put under pressure, the molecules are cracked into smaller chain molecules and as this stream of feedstock is passed in the presence of a catalyst as hydrogen is added it forms hydrocarbon molecules like diesel, jet fuel, and propane.   This process removes oxygen, sulfur, nitrogen, and other impurities from the feedstock and converts it into hydrocarbons that are similar to those in petroleum diesel⁴⁵. Hydro processing is also used in petroleum refineries to upgrade crude oil into various fuels, such as renewable diesel. 

Other ways to produce renewable diesel include pyrolysis, usually using a Fischer Tropsch process.  Pyrolysis is usually made from high energy content dry garbage.  Think wood waste, plastics, tires, and other high Btu content waste streams.  These garbage feedstocks are transformed into hydrocarbons with a process of heating the feedstock in the absence of oxygen to produce a liquid bio-oil that can be further upgraded into renewable diesel; gasification, which involves converting the feedstock into a mixture of carbon monoxide and hydrogen (syngas) that can be synthesized into renewable diesel; and biochemical and thermochemical technologies, which involve using enzymes, microorganisms, or catalysts to convert the feedstock into renewable diesel⁴. 

According to the U.S. Energy Information Administration (EIA), U.S. production capacity for renewable diesel could increase significantly through 2030, based on several announced and developing projects. This growth is driven by higher state and federal targets for renewable fuel, favorable tax credits, and the conversion of existing petroleum refineries into renewable diesel refineries². As of the end of 2020, U.S. renewable diesel production capacity totaled nearly 0.6 billion gallons per year (gal/y), or 38,000 barrels per day (b/d). Several projects currently under construction or completed can jump this capacity up billions of gallons.  could increase this capacity by 2.4 billion gal/y; proposed and announced projects would add another 1.8 billion gal/y by 2024. If all projects come online as intended, U.S. renewable diesel production would total 5.1 billion gal/y (330,000 b/d) by the end of 2024². 

Globally, over 1.45 billion gallons of renewable diesel are produced annually and are forecasted to grow up to 3.34 billion gallons in 2024. Neste, a Finland based petroleum refining company, is currently dominating the production of renewable diesel¹. Other major producers in the United States include Chevron, BP, Seaboard Energy, Phillips 66, HF Sinclair, Montana Renewables, Marathon, and Diamond Green Diesel¹. 

Resources:

(1) Renewable Diesel – Alternative Fuels Data Center.

(2) Renewable Diesel and Biodiesel Basics – EIA 

(3) U.S. renewable diesel capacity could increase – EIA

(4) Renewable Diesel: The Fuel of the Future – FutureBridge.

(5) Overview of the Production Capacity of U.S. Renewable Diesel Plants

Construction Loaner Diesel Tanks
Diesel Fueling for Construction Jobsites 720 720 Star Oilco

Diesel Fueling for Construction Jobsites

Diesel fueling for construction jobsites in Portland, Oregon.

Keep full service for construction jobsites with R99 Renewable Diesel available.

Diesel Fuel for Construction

 

If you are managing a project we will keep that jobsite full.

Diesel fueling for construction jobsites seven days a week in the Portland metro region.  We have a variety of diesels accompanied with DEF top off to keep your operation running without interruption. We can provide a consistent schedule to keep going seven days a week.  If you are running generators, blowers, heaters and other 24-7 equipment we can keep those running through the weekends.  Our autofill construction service can provide the fuel you need, tanks for your project, and regular scheduled service to guarantee uptime.

Does your diesel fueling for construction needs call for a guaranteed stops on a schedule? Do your projects sometime require every 12 hour or 6 hour fueling? Does you fueling project needs call for generators, heaters, reefer-trailers, light sets, and yellow iron?  Star Oilco can do a few gallons wet hose fueled into your equipment to 100,000+ supply contracted for your project.  We have trucks dispatched seven days a week with several shifts.  Star Oilco can do twice a day fueling if needed for your project including regular 0 gallon stop by visits to confirm your equipment is running.

We can keep your generators running, your heaters blowing hot air, your pumps pumping, and your crew running without having to stop for fuel or DEF!

 

Fueling Back Hoe on construction site

Jobsite fueling service to meet the needs of your project management.

Off Road Diesel, Dyed Renewable Diesel and DEF available for your project need.

 

Mobile Fueling of Construction site in Portland, Oregon

Keep Full Mobile Onsite Fueling

Star Oilco can provide scheduled mobile fueling to your jobsite seven days a week.  Our diesel construction fuel service includes onsite tanks as well as DEF equipment for your project needs. At start of shift and end of shift schedule is also available for delivery.

 

 

 

Tight Access Diesel Construction Fueling Available.

Star Oilco’s fleet includes smaller fuel trucks able to access tight to reach areas in parking garages, active facilities, back alleys, inside buildings, and other hard to reach areas required by a project.

 

 

 

 

DEF Delivery Included with your Diesel Fueling.

Diesel Exhaust Fluid (DEF) keep full and bulk delivery service to your jobsite.  We have DEF bulk equipment as well as boxes available for your project.  What you want for your operations is what we want. Keeping those small DEF tanks full and generators running is what we can do for you.  We are here to make it easy.

 

 

 

Renewable Diesel in Oregon

Dyed Renewable Diesel for your Diesel Construction Fueling needs.

Does your project require a lower CO2 footprint?  We have off-road R99 Renewable Diesel on our trucks daily.  Star Oilco also has multiple sources for R99 in the Pacific Northwest for your needs to guarantee supply. If large volumes are needed for Renewable Diesel for a project in the future we can enable a contract to meet these needs.

 

 

Construction Loaner Diesel Tanks

 

Diesel Fueling Construction Tanks available.

Star Oilco has fuel tanks available for your project.  Our typical inventory of tanks sizes are 250 and 500 gallon UL142 double wall thanks.  We have 100 and 50 gallon fuel cells for moving fuel around a jobsite in the back of a fuel truck. Larger sizes available for longer term and larger projects with advance planning.

 

 

 

Wet Hose Fueling Service in Vancouver, WashingtonStar Oilco can provide your project with the fuel you request.
– B5 ULSD Dyed Diesel
– B20 ULSD Dyed Diesel
– Dyed R99 Renewable Diesel
– E10 Gasoline
– Non-Ethanol Premium Gasoline
– Kerosene, and others if the project calls for it.

Schedule Your Fuel Delivery Today

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