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
Mine is a SRW and I pull a 7000lb travel trailer, so not an exact answer to your question, but hopefully it will help.
I've owned my truck for 1 year and it is also my daily driver...it's a 2018 Denali Crew Cab. My computer average MPG for that 1 year is 15.6 for all my driving. Towing seems to be in the 11-12 range, my average weekly tank is around 16.5, and hwy/interstate trips with just the family is 22-23. The DRF cleaning cycle will really knock down your avg mpg for a tank.
I've owned my truck for 1 year and it is also my daily driver...it's a 2018 Denali Crew Cab. My computer average MPG for that 1 year is 15.6 for all my driving. Towing seems to be in the 11-12 range, my average weekly tank is around 16.5, and hwy/interstate trips with just the family is 22-23. The DRF cleaning cycle will really knock down your avg mpg for a tank.
