6.6 Chevy gas engine
? For any one with the new chevy 6.6 gas . About what is your fuel mileage not towing ? If you have towed with it fuel mileage
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Over 16k miles, 13 mpg avg. Best 18 mpg, towing travel trailer and goose neck (9000 and 16k lbs) averaged 8-9 mpg, towing aluminum 16ft stock trailer averaged 11 mpg. 13-15 mpg on average for most tanks. Reg cab dually.
