It seems alot of people are interested in this bio-diesel stuff. All the links Iv'e seen on the net are posted in this thread already. I am going to whip up a batch of the Dr.Pepper bottle stuff this weekend if I can find the lye.
Not sure I'm ready to dump it in my '01 7.3 just yet. Thought I might look around for a VW golf or Rabbit diesel to play with. I drive 75 miles round trip to work so I've been seriously thinking about this myself................

SteveSr