I pull 18mpg consistently towing my jeep at 70mph. 24mpg unloaded on the highway. 15 around town ( more idle time that driving most of the time).
Now the only reason you are arguing is cause you have a 24v and i have a 12v. Im never gonna admit anything you say is right. Reason 1 is you like thornbirds, Reason 2 you told be your dads Super Duty did not have a trac bar. It is what it is.