I’m curious about your fuel economy, bare and while towing, did you ever calculate it? The reason for asking is I recently went on a trip with a friend towing a long empty goose neck trailer, he has a Ford F450, the fuel consumption was horrible, 24L/100 km(9.8 mpg), it was all highway miles at 90 to 100km/h (55 to 60 mph), I can’t imagine if we were towing a travel trailer what the fuel usage would be, with more wind drag because of the height difference, in comparison my truck does 9L/100km (26 mpg US) empty and 14L100km (17mpg US) while towing my small travel trailer on the highway at the same speed, but I have the small 3L V6 Diesel.