Thanks everyone for giving me some insight here. I absolutely love the concept! Yes, vegetable fuel oil is the way to go. How appropriate! As I'm out working my row crops, my tractor is being powered by the very thing I'm working to produce. Now I've to investigate how difficult it is to get here in Georgia. And of course there is that other problem. My current tractor is a gas burner. Well, I have plans to remedy that this winter.