480 miles to be exact, and that was with the wife and the dog int the back and the truck loaded with atleast 200 pounds of camping junk. and thats not all straight roads from london ontario to parry sound and back to london, roads get VERY hilly around parry sound.
3.8 isnt sucking that much fuel then your 3.1, if it is it has not been maintaned properly.
you guys sure hate us 3.8 owners lol. dont get mad im just sharing what info i have to share