Originally Posted by marybeth

RichC -EVERY study ever done using unheated Veggie oil in a Diesel engine has resulted in catastrophic engine failure. You can google studies ranging from John Deere, ASAE (American Society of Automotive Engineers), University of Alberta, etc. I have attached one such study that summarizes many other studies. In fact many of the tests using veggie oil needed to be stopped due to premature engine failure.

WVO can be run in a properly heated two tank system-IF (BIG IF) the engine is up to temp & the WVO is up to temp (80C/160F+) before switching to WVO. Anything else is killing the mighty Bemz. While the mighty Benz may seem to be running adquately on unheated WVO-a oil sample test, pressure test of the injectors, blowby test, & compression test will show the damage. Do these tests on your Benz if burning WVO-otherwise you are running on bald tires while happy untill you have a flat.

That said -my 16 year old son drives a 1985 MB converted to run WVO. I cannot think of a better car for a young driver then a big, heavy, slow (relative to rice rockets), cold rolled german panzar tank.