I have almost an unlimited supply of waste motor oil. I've filtered this and burned it in my truck for quite awhile last year but then stopped because my filtering system was more hassle then it was worth. Now I have a much better plan on how to set up my filtering capacity. I'm going to turn my shed into a filtering warehouse.

What all kinds of fuels can be used? I can get my hands on a lot of hydraulic fluid used motor oil and who knows what else I can get from my company.