Are people using straight filtered vegetable oil to burn in their trucks? Or does it have to be cut with ethanol or something? Can it just be filtered and mixed with diesel in the tank? I've read some threads on this but it seems some are talking straight V O and some are cutting with something. (I guess to raise flammability?)

Here's a link that should answer your questions about biofuels and Straight Vegetable Oil in particular:


http://www.journeytoforever.org/biodiesel_svo.html

I'm running straight VO, preheated with engine coolant filtered to 1 micron. I start and shut down on #2 petro-diesel.

At $2.10 a gallon I'm kicking myself for not having it.