Biodiesel is a non-toxic and biodegradable fuel that is made from vegetable oils, waste cooking oil, animal fats or tall oil. It is pure burning, non-petroleum product created from various diverse renewable natural resources like vegetable oils, corn and animal fats.
Only diesel engines that have natural rubber parts instead of synthetic rubber parts cannot use biodiesel, but these engines are not as common as the engines that can use the biodiesel. The fuel has similar properties as that of the diesel, making it easy to use. Since biodiesel can readily be used in current diesel engines without having to modify them, it has the potential to supplement the use of petroleum-based fuels as a primary energy source to fill up the need of the world's transportation sector.
There is also ongoing research into using sewage grow algae which is then used in the refining process. It can be purchased directly from biodiesel producers and marketers, petroleum distributors, or at a handful of public pumps throughout the nation. And bio-diesel fuel can be domestically grown, eliminating our dependence on foreign oil.
Diesel engines were in fact originally designed in the early 1900's to run on biodiesel made from oil seed crops and not to run on petroleum-based diesel. Biodiesel works in any diesel engine with few or no modifications to the engine.
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