[AlaskaCub]

Funny you should bring this up, I have friends that are running straight McDonalds cooking oil in their diesels with no refining. All you have to do is start the truck with the tank that has diesel in it and then switch over to the cooking oil tank once the engine is warm. He smells like McDonalds when his truck is idling outside, it s a trip, we call him the McDonalds truck!