Biodiesel
is a derivative of vegetable sources such as soybean oil and is similar
to diesel fuel. It can also be made from recycled cooking oil and
animal fats. All major engine manufacturers’ warranties cover the use of biodiesel fuels, most often in blends of up to 5 percent or 20 percent biodiesel.
Plants in nearly every state in the country produce biofuel. Its production has increased from approximately 25 million gallons in the early 2000s to almost 1.1 billion gallons in 2012. “This represents a small but growing component of the annual U.S. on-road diesel market of about 35 billion to 40 billion gallons.”
