My 2006 Ram 3500 crewcab L.B. 4 WHD gets around 14.5 in town, 17.5 to 21.5 on the hiway depending on traffic and hills. It has got a best of 14.5 towing my 24 Ft enclosed Pace car trailer weighing between 8600 to 9100 lbs on the axles to the worst of 8.5 MPG towing my 34 Ft Fifth wheel travel trailer that weighs right at 11,500 on the axles against a strong headwind comng back from eastern OR at 65 MPH. It has 3.73 gears and stock size tires shruggy IHTHs. My old 1998 3/4 ton CTD 24 valve 2 whd drive got similar mileage also towing the same race car trailer with 3:55 gears and shorter tires. It had a programmer after the first 50,000 miles, I ran it in economy tow mostly thumbs I have passed a lot of other brand trucks towing similar loads up the hills with both trucks, I really liked passing the V10 Dodges and Fords towing race car trailers up hills boogie devil

Last edited by Cab_Burge; 10/10/15 01:48 AM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)