I experienced my best towing drive recently.
A 4 hour long, 30 gallons of fuel climb from Salt Lake City to St George Utah on 15 south.
Clear calm and warm weather and very little traffic.
Ram stock diesel 800lbs of torque crew cab dually with 26 foot enclosed trailer.
Posted Speed limits 75 to 80 when towing too.
One time I was flat in 5th at 75 on a very steep hill.
Otherwise it was always part throttle.
Although on the flat I can get 15mpg towing at 60mph, but climbing for 4 hours at 75/80mph it got down to 9mpg.
Great feeling legally hauling butt towing like that, compared to California where it's 55mph towing but you can cheat it to 64mph most the time.
Although years ago I did get a $400 towing ticket in Bakersfield towing on the 5 north 60mph in a 55mph towing zone, at the same time it was posted 70mph for cars.
