COPGUY
Member
I'm new to the diesel world but from what I have heard I should be getting better mileage than I am right now. Took a ride on the highway and managed to get 17mpg at 70mph/1800rpm while headed southbound for about 10 miles. On the way back I could only get 13.7mpg at the same speed on same highway??? Highway is flat, not many hills here in South Jersey. Truck is a 2011 crew cab 4x4 with 51,000miles.