2015 Chev 2500HD mpg
For those it interests::: We took off a couple months ago and hit primarily the Colorado, Wyoming, Montana, N Dakota ... mostly Rockies. Dropped the 265 stock tires (they sucked) and installed...
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That's good mileage. We get 9.5 to 10 mpg carrying our AF 990 which is about 1,000 lbs. heavier. That 6 liter/ 4.10 combination works great.
