Few things make more sense in the 21st century than biodiesel. Using old french fry oil to power that cube van is good for every single entry of a triple bottom line.
Cost of Home Biodiesel
Assuming you can get your hands on a source free oil, which is getting harder but still very possible, you can run a diesel engine for 58 cents a gallon. The most common outlets for a source of free used oil are fast food establishments and oriental restaurants. Continue reading