Good on you, Naemanson... Yeah, it is possible to get a deisel to run on used cookin' oils... I had a Volkswagen deisel pickup truck about 15 years ago and was on the verhe of taking the plunge in gettin' it to run on used cookin' oils when I got rear-ended by some guy in a big new SUV and it killed the poor ol' VeeDub...

BTW, their are folks burnin' motor oil fir heat... No reason to put it back in the ground...

Bobert