I'm still trying to get an accurate MPG, but driving style has much to do with MPG. If I set the cruise at 65mph, I get phenomenal MPG. I drove from Cincinnati to Knoxville and back on little more than 35 gallons of fuel. That's over 14 MPG!!! I know, I know, I don't believe it either. This is why I need some more testing.
I had an Isuzu NPR that would get 9 MPG if I were alone on the highway. Conversely, the same truck would get 13 MPG when traveling 30 yards behind another truck. I learned to draft with that truck. I'd like to try Daytona next
Doc Weaver