Would like to know what mileage you Chevy 6.0 owners get wile towing (6000-8000 pounds). Also mileage while not towing. Looking at Chevy 2500hd w/6.0 gas eng. and 4:10 gear.
At 30K combined I got about 5-7. Pulling boat trailers and so forth I got 10 mpg. Highway mpg 14-15. It was a 2015 3500 6.0 CC, 4X4. Great truck, I would do it again.