Drove 200 miles (truck is at 2500 miles), 30.9 on flat country in a load 4x4. No problems at all and my mpg on the hwy keeps getting better!
Wow, that is great considering that your weight was within 400 lbs of the GVWR. You must have a light foot! The best I have done on the level is 28 mpg, although the heavy LT tires may have something to do with that.Recently saw similar. 1,000 mile trip. First 300 were flat highway, we averaged just under 32 mpg. With passing in the mountains, climbing hills are around town use, we dropped to 24. Truck weighed in at 6560 pounds, so this kind of mpg is just stunning to me! All evic mpg. Not hand calcing.