All, I do not know if this is the correct forum for this topic. How to Prepare Used Cooking Oil for Biodiesel: 13 Steps , however this seem to be the simplest Nonscientific Answer I have found. Tom
the older diesel engines would run on any thing you poured in the tank. shoot ive poured gallons of used motor oil in one run pretty good had to change filters a bit more but it ran just fine. the warmer the oil is the better.