I know I didn't buy my 3500 Limited dually for the mileage but I only have about 450 miles on it for the first week and I'm getting around 14 mpg for the first tank. What are some of the numbers that I can expect after a few thousand miles?
I tested mine this weekend since I was making the same trip multiple times. At 75 MPH I get 15.6 MPG average, at 70 MPH I get 18.2 MPG and at 65 MPH I get 19.8 MPG. I was shocked to se that big of a difference between 70 and 75. 2019 3500 Crew Cab SRW HO Aisin.