|
I recently bought a 2018 Denali 3500HD, SRW Ive got 6,000 milles on it but only about 1,000 towing Averaging 10.5-11 mpg. Hoping that will increase as the engine wears in. Had a 2015 Silverado 2500HD avg was 11 mpg I definitely can tell the difference in the increased horsepower and torque.
|