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Diesel Engines: What is Biodiesel Fuel?

September 30th, 2009
Biodiesel is an alternative fuel formulated exclusively for diesel engines; it’s made from vegetable oils or animal fats. Biodiesel can be mixed with petroleum diesel in any percentage, from 1 to 99, which is represented by a number following a B. For example, B5 is 5 percent biodiesel with 95 percent petroleum, B20 is 20 percent [...]