>Why do they have to make modern engines so ugly
LOL, I think it's pretty. And it looks small in the truck.
Just driving locally - we have not run long distances since the pandemic started - I will average 12.5 or so. Loaded I've seen north of 7. We got the truck in February before all hell broke loose. We did a run to Fort Worth and back with some stops. Saw a high of 14 over there and the total average was around 12.5. I would expect to see 7~7.5 with the big trailer on a longer trip. Note that it is not flat here, lots of rolling terrain and that we pick up an entire step on the barometer (like from 28.5 station pressure to 29.5) going down Ranger Hill which will boost mileage on any vehicle LOL. Once rolling with the load, the truck stays in between gear 8 and 10 (1st and 3rd OD) in all conditions. Same conditions that caused the 1993 to downshift into 1:1 from OD.
IIRC, around 2400 RPM at 75+ in top gear. I haven't got to drive it in a while, so I forget exactly. Also, have not weighed is yet so guessing at the weight. Should be in the 6500~6800 range for it's size and 2x drive gear. Have no need for 4WD. For reference, the 1993 F-350 weighs 5600. When we can safely go inside and argue with the weigh clerk at the truck stop, we'll get the whole rig on the scale. They are always a grumpy bunch. I wish there was a feed store with a scale closer.
This model has the 3.73 gear and is rated at 24,000 GCVW, 16,500 max trailer. I pull with about 1800 lbs tongue weight, no air bags, 14K Equal-i-zer hitch. Trailer is 7.5 T x 8.5w x 34'L + 54" tongue.
The 1993 F-350 DRW with a 460, 12K max trailer - 9.8 MPG average unloaded, 5.5 average loaded. At 62 MPH, about max towing speed w/same trailer.