Quote Originally Posted by bigwhittie View Post
I took a 4500 mile trip from Atlanta,Ga. to Breckenridge, Co. and the average was 14.2 and I was running 70-95 mph. I guess I'm getting better then most. I had an 06 5.9 with 4.10 4x4 with the same type of camper shell and that truck would pull 21 mpg all day long. I thought this one should get at least 18+ mpg. This 17 pulls like a train and rolls so nice! Maybe I should be happy with the mpgs! Thanks guys!
70 to 95 MPH? That will do it right there.

With 4.10's anything above 65 MPH is going to drink the fuel!!!

Keep it between 65 and 70 and see what it gets. Y

You will be surprised.