Biodiesel (B100)
Biodiesel (B100) is a renewable product derived from processing (transesterification) agricultural oils, recycled cooking oil and animal fats into Fatty Acid Methyl Esters (FAME).¬† Biodiesel that meets an established quality specification (ASTM D6751) may be used as a blend component in diesel fuel. Up to 20% by volume biodiesel may be added to diesel fuel, the final blend of which is identified by the letter “B”¬†followed by the percentage biodiesel in the final blend, such as B20, which contains 20% by volume biodiesel and 80% by volume diesel fuel.

Ethanol is a renewable fuel made from various plant materials collectively known as “biomass.” More than 95% of U.S. gasoline contains ethanol, typically E10 (10% ethanol, 90% gasoline), to oxygenate the fuel and reduce air pollution.

Ethanol is also available as E85, or high-level ethanol blends. This fuel can be used in flexible fuel vehicles, which can run on high-level ethanol blends, gasoline, or any blend of these. Another blend, E15, has been approved for use in newer vehicles, and is slowing becoming available.

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