Well not to pop your bio-diesel bashing bubble but if anybody would reserch this they would find out the truth. When the diesel engine was invented is was designed to run on peanut oil. Diesel invented this engine so the farmers who where going to be useing it could produce their own fuel. It wasn't untill years and years later when the oil company found out that diesel fuel was a by product of refineing gasoiline. Of course the oil companys don't want you to know that a diesel engine will run on things other than their diesel fuel. There are documented cases of people running on B100 which is 100% soy and others running on veg. and used cooking oil with no ill effects. Fords stand on it is very conservitive with the B5 and the only problem they did find is useing B100 that the injectors would fail at the tip on a few engines. There was no other problems running B100 and there have been no problems running B5 as to date.
So you can say want you want and bash bio-diesel all you want but facts are facts and please get them straight before you offer info on something you know nothing about.