Im not sure of all the ingredients... I dont know about your truck(cool truck though!) If your really interested, you should join a Cummins forum, they would know. Or atleast search all over it, Im sure someone has asked the same.
My brother has a 92, and 97 Dodge Cummins. He doesnt make "biodiesel" he just filters out the fries and chunks from the veggie oil and dumps it in. Not sure what ratio he runs it though. I believe has had it 50%, 80%... A buddy of his was running 100%...
He has a heated fuel filter too, cold mornings it may not want to start up as quick.
Your engine has more computer than his, so Im not sure what all you would need to do...
I dont know what all the cost of making biodiesel is, but I think in the end(after all the ingredients and whatnot), it was maybe the same, or a littler less the just buying strait diesel. Dont quote me there, Im not sure bout that.
Good luck to ya, let us know how it goes.
I know you told me not to quote you, But i had to!
There is a way to run pure through the cummins 5.9, But that would be meaning that i would have to change injectors and my injector pump, which would be a total of about 6-8 grand if i do it myself, depending on how much that type of pump costs.