"One of the ways to make driving more sustainable is to reduce the world's dependence on non-renewable resources. By developing vehicles capable of running on renewable fuels, such as biodiesel, we're addressing concerns about the environmental impact of driving.
Message Posted: Apr 7, 2009 7:57:26 AM
In the United States, biodiesel is primarily made from soybeans. It's typically sold in blends using 2 to 5 percent biodiesel (the remaining 98 to 95 percent is traditional petroleum-based diesel). These blends are called B2 or B5.
Most diesel vehicles can use B2 or B5. Diesel vehicles have been successfully operated on B20 and B100, but this is not recommended unless the vehicle's fuel system has been modified and the fuel quality controlled.
Biodiesel can also be made from waste cooking oils and animal fats, but the resulting fuel is problematic due to the wide variation in properties from these waste streams."
Biodiesel - Ford Motor Company
[Edited by: barsantij at 4/7/2009 8:57:40 AM EST]