Just FYI, mike...came across an article in our local paper today, that was news to me.
I was unaware of the use of SVO (straight vegetable oil) as a fuel. Apparently one can convert certain diesel engines and pour vegetable oil, new or USED, right into the gas tank. The reason my local paper ran the story, was because a local man had had the conversion done and was in a particularly unique position to benefit from it.
He own the local burger and fries franchise. So he gets all the used vegetable oil he wants for free...LOL..talk about saving money on fuel...
Anyway, FWIW, here is a link to the company website who did the conversion for him...