There are guys all around me with trucks and SUVs with RV and Boat trailers. None of the gas guys are happy and all of the diesel guys are happy. My simple mind tells me that if you are routinely going to do a weight combination above 7 to 8k you are not going to be happy with big heavy gas guzzling SUVs.
I only tow 2x a year 8900 lb boat. The Expedition runs 8.5-9pmg
This spring I borrowed a buddy’s 2024 6.8L F250. What was interesting is that the 6.8 only starts producing power at 3500rpm and getting up into 4000-4500rpm is common when dragging that weight up a grade. 6spd transmission. Talking to a friend running the 6.7 diesel his mileage is very much the same but his service costs are 4x as much as the gas truck.
The only difference we came up with is that he can run the same hill faster at lower RPM.
After spending a few days with the gas F250 12mpg non towing… If I had to have one? I’d get the gas one.
Yeah its very different than the Expedition regarding hauling ability, cooling system, driving dynamics. The 3.5 eco boost is a beast pulling the boat better in the 1800-2500 rpm range than that 6.8L gas truck at 3500 rpm though.
If the Expedition had better transmission cooling like what we see on the F150, and had a better suspension setup to handle the tongue weight it would be far better tow rig in that 8000+ lb range. But as it sits that 8000+ lb towing zone its only marginally ok for occasional trips. Sub 7000lbs is more likely the better weight for lots of towing