I did tow my trailer today to the work site and numbers are a little better than with my old truck, but far from what you got. It was showing about 9.5 MPG going 110km/hour, but it was windy and the truck hasn’t been broken-in yet with only 70km on the odometer.
Wow that is crazy good mpg, my previous 12th gen 3.5 ecoboost was getting around 8-10mpg with my 14ft enclosed trailer even when trailer is pretty much empty, now I am wondering how much my new 2.7 will take with the same trailer.