[shinnlinger]

When you process (heat and treat) the grease to "biodiesel" you burn out alot of "junk" and you dont need a do anyhing to your diesel machine. Biodiesel does gell more readily in the cold and has less power, but it does smell a whole lot better.

"Greasel" is when you only strain the french fries out of used grease and put it in a seperate, heated tank(ussually from the radiator) on your machine. You start the machine on regulalr "dino diesel" and after the grease tank heats up you can switch over, making sure you switch back to regular diesel to purge the grease before you shut off(imagine trying to start your machine with it full of crisco).

It is with the greasel aproach that you have the most problems. If there is cleaning solvent in the grease(not unheard of), the biodiesel process removes it, but in the greasel set up it can destroy your fuel pump. SOme also put straight grease in their diesel tanks in warm climes, but that can gum up the motor (Ie hang up a lifter) and cause major problems