How do you turn used cooking oil into diesel or a fuel that works in diesel engines?

I saw it on Mythbusters.How do you turn used cooking oil into diesel or a fuel that works in diesel engines?
I don't know but read this





Biodiesel is produced from any fat or oil such as soybean oil, through a refinery process called transesterification. This process is a reaction of the oil with an alcohol to remove the glycerin, which is a by-product of biodiesel production. Fuel-grade biodiesel must be produced to strict industry specifications (ASTM D6751) in order to insure proper performance. Biodiesel is the only alternative fuel to have fully completed the health effects testing requirements of the 1990 Clean Air Act Amendments. Biodiesel that meets ASTM D6751 and is legally registered with the Environmental Protection Agency is a legal motor fuel for sale and distribution. Raw vegetable oil cannot meet biodiesel fuel specifications, it is not registered with the EPA, and it is not a legal motor fuel.





Here is a link to tell you moreHow do you turn used cooking oil into diesel or a fuel that works in diesel engines?
there,s a kit you buy that helps you do it,,its not very hard to do,,the kit will be about 1500 bucks,,and it pays for it,s self in about 3-4 months,,sounds like a good investment,,if you own a diesel,,hope this help,s.