A bit off topic but....
With a handle like Longhorn, I gotta ask, are you a UT grad?
Hook 'Em Horns!
Class of 1986
D2 does have more paraffin, thus more lubricity than D1. You will get better MPG with D2 as it has a higher BTU content than D1. D1 is used during the winter months in colder climates to avoid jelling. I've had my truck jell up on me a few times last winter. It's decidedly no fun if you're in a hurry. As far there being a distinct advantage to running D2 instead of D1 regarding engine wear, any effects are miniscule. Having jelled fuel is much harder on things like pumps and injectors than running D1.
BTW: No such thing as dumb questions. How else are you going to learn unless you ask? Enjoy the truck!
Last edited by Worm Drowner : 11-07-2005 at 06:32 PM.