Adding data points. Just completed a 3,000 mile trip. Expedition towed better than our 2022 6.2 v8 F250. Used Andersen WDH.
Leg 1: Towing 8,500lbs (5k boat, 1k gear, 2.5k trailer) 591 miles. 7.1 mpg.
Leg 2: Not towing. 500 miles not using cruise control and at 75-90mph. 19.3mpg.
Leg 3 Not towing. 1,072 miles. 21.3mpg. Cruise control set between 65-75 mph for 90% of time.
Total trip 2,846 miles 14.3mph.
Very impressed.
Leg 1: Towing 8,500lbs (5k boat, 1k gear, 2.5k trailer) 591 miles. 7.1 mpg.
Leg 2: Not towing. 500 miles not using cruise control and at 75-90mph. 19.3mpg.
Leg 3 Not towing. 1,072 miles. 21.3mpg. Cruise control set between 65-75 mph for 90% of time.
Total trip 2,846 miles 14.3mph.
Very impressed.