Diesel Fuel Mileage Est.
Hello, I am considering moving to a deisel engine in my next truck. Primary reason is for increased fuel mileage. I tow a 23' travel trailer that weighs approx 6,000 lbs loaded. I know there are many...
Forum Discussion
I get 10-12 towing my 9500lb 35ft TT towing at 60-65. I get 12-14 towing my 7x14ft 5Klb cargo trailer at the same speeds on the same roads. Once a trailer is hooked up, unless it's a pop up, mileage is in the tank. Now on my 2015 duramax I average 18-20 on the highway going speed limit to 5 over. My 2004 duramax got about the same mileage towing, but 16-18 on the same highway trips. And the 5 over includes idaho and Mt with 75 and 80mph limits. Going to southern CA we get 20 mpg consistently. Hand calculated, the DIC is optimistic.
