Diesel mpg
Question: those of you who use a diesel truck to pull an RV, what kind mpg do you get when you pull your RV?
Forum Discussion
Have 07.5 Duramax 6.6 LMM. Pulling Sig rig I get around 12 mpg on flat to rolling terrain @65 mph. In mountains drops to 10 or so. This is based on actual fuel consumed, not truck computer. I have done full tank tests without trailer and got 22 mpg @ 55 mph! At 65 drops to about 18 mpg.
