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 Biodiesel FAQs

What is B20 Biodiesel?

It is an alternative fuel created by mixing regular petroleum diesel, with biodiesel produced from agricultural products such as soy beans, canola, camelina, mustard seeds, waste cooking oils and other organic products. The B number indicates the percentage of biodiesel. That means B20 Biodiesel is a blend of 20% biodiesel and 80% petroleum diesel. Although biodiesel can be used at any mixture, including 100% biodiesel, the B20 mixture is considered a typical blend for normal use in conventional diesel engines.

Is Biodiesel safe to put in my engine?

Yes, using Biodiesel requires no engine modification, but achieves significant performance, emissions and aesthetic benefits. Biodiesel has been tested by governmental agencies, universities, transit authorities and private industry in the U.S, Canada, and Europe. Biodiesel is also recognized as an alternative fuel by the Department of Engergy and the Environmental Protection Agency.

Can B100 Biodiesel cause any problems for my diesel engine?

It can, depending on how old your vehicle is. Biodiesel is a form of solvent an an can affect some seals, gaskets, and adhesives, particularly those made before 1993 and those made from natural or nitrile rubber. Most diesel engines made after 1994 have been constructed with gaskets and seals that are generally biodiesel resistant. Earlier engine models or rebuilds may use older gasket and seal materials and present a risk of swelling, leaking, or failure. Fuel pumps may contain rubber valves that may fail. B100 also cleans dirty fuel tank deposits which may result in the need for an additional filter change.

Does B20 act and burn the same in my engine as petroleum?

Yes it does. In most cases you would be unable to tell the difference between the two fuels, although some notice the diesel exhaust lightening in color due to the reduced emissions. B20 can be used in the existing engines and fuel injection equipment with little impact to the operating performance. In more than 30 million miles of in-field demonstrations, B20 has produced similar fuel consumption, horsepower, torque and haulage rates as conventional diesel fuel. Biodiesel also has a superior lubricity, which helps prevent engine wear, plus it has a higher cetane number than U.S. diesel fuel, which classifies B20 as a premium grade fuel. B20 has BTU content that falls in the range between #1 and #2 diesel.

Can I still use B20 Biodiesel during Montana's cold winter months?

Yes, you can. B20 biodiesle has essentially the same cold weather properties as regular petroleum diesel. B20 is used extensively in Yellowstone Nat. Park, in ski areas and other cold weather locations with no problem.

What does biodiesel mean to Montana?

In addition to the reduced air pollution, biodiesel has the potential for significant economic opportunites for the rural communities by creating markets for crops used to produce biodiesel. Earl Fisher Biofuels is investigating the construciton of Biodiesel production plants in other locations across Montana.

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B20 Biodiesel Helps Clean the Air We Breathe

B20 Biodiesel burns significantly cleaner than regular petroleum diesel. This means vehicles that use B20 fuel will produce appreciably less harmful exhaust emissions. The higher the percentage of biofuel used, the greater the reduction in the dangerous emissions. The B20 fuel you are burning in your diesel engine means you are reducing the amount of harmful emission from your vehicle into our air by the following amounts:

  • Carbon monoxide


  • Hydrocarbons


  • Particulates


  • Air toxics

-12% to -20%

  • Mutagenicity


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