Duramax L5P Fuel Mileage
Anyone have any real world experience with the fuel economy of the new GM L5P Duramax in a 3500 DRW?
Forum Discussion
I have a 2018 GMC 3500 DRW Duramax purchased in July 2018. So far I have run about 5,500 miles towing and around 10,000 mile not towing.
Towing avg MPG = 10.7
No Tow avg MPG = 18.8
Towing avg MPG = 10.7
No Tow avg MPG = 18.8
