I have a friend they run 50/50 on the farm.

I think they only run 25/75 in the trucks if they do though.

If you are going to mix in motoroil, Filter it good. There are metal particles in the oil, injectors probablywont like them much.

I would Mix it slow. start out with a small mixture if your serious with it. only 10/90.
To much and they get a little cranky. Anotehr guy on here tried it though, he said that his ford took a dump. =*( poor truck.