[shinnlinger]

Ductape,

I have been using a 40-50% mix all winter w/out troubs in my f-350 and tractor. I throw some anti gell in for good measure

If you have to buy new oil then it is not cheaper, the waste oil is the way to go, but I too share concerns about waste availabiltiy in the future. THere isn't enough to go around (estimates put it at only able to provide about 10% of the countries fuel needs) and comercial guys are getting pretty cut throat saying they are going to report resturants for not using licensed carriers if they dont give/sell to them, so I am trying to get a comercial renderer to sell me filtered waste for about $1 a gallon, but I havent tried veryhard.

YOu can burn it in your oil furnace to, so a community/ neighbor biodiesel machine could be slick IF you can get a ready supply of the waste oil, and honestly I dont know if that is a guaranteed thing.

It also doesn't have as much power as dino diesel or get as good a mileage.