I think that the white smoke is the incomplete burning of the lubricating oil. It might even be a bit blue-ish. My run times on a 4oz tank seem pretty good so I think I must have pretty good combustion.

My mix is pretty stinky and smoky and may not be acceptible for some people and places. I don't mind it though. Heck I like riding on steam trains burning coal with huge clowds of black smoke :-). A smoke trail comming off the airplane is just cool!

I just might try the vegy oil cook up soon. I have about 40 gallons out front from when I used to play with running my truck on the stuff.

Treven.