I'm am very glad our truck has 4.10's. At 65 MPH the rpm's are just over 2000. We get 17 -19 MPG empty at 65 MPH and 12-15 towing at 65 MPH. Fiver is tall and at about 11,000 lbs. The 7.3 Ford diesel likes to run at 2000 RPM.
Robert & Nancy with "Murphy the EOG"
Murphy has passed on, but Micah and Bogie have assumed the watch! 02 Holiday Rambler 5ver, 2015 Indian Chief Vintage. 98 Coachmen truck camper.