Got my 500 gal tank today. Gonna go talk to beacon tomorrow face to face, see what I find out. He says I gotta get a epa number to buy from him, says it's easy. Anybody ever messed with that before. I wish I could make the stuff myself, butt used oil is scarce as hell around here. People sell it on craiglist for 1.90 + cleaned. how much more moneywise is involved these days to make it?