[FSA1673]

My truck is a Canadian model, not sure it makes any difference. Mileage is not what Ford claims. Mine has 3.73 rear gears and I get around 22 miles to the american gallon on the highway, 18 around town, and only 11 when towing. I suppose with a regular cab and 3.31 gears you would more on a flat stretch if you drove slow. I know with mine the more it revs the more gas it burns. On the highway I usually set the cruise control at 75 mph empty and 70 mph while towing.

The mileage is a little better than the 2009 5.3L GMC with the V8/V4 mode. I also had a 2006 GMC before the 2009. The Ford revs a lot less when towing than the GMC as well which is nice when on a long trip. The GMC would go up to around 4000 rpm on the hills while the Ford is around 2600. It works/feels like a diesel when your towing with it. It dowshifts a little on the hills then the turbos kick in and away it goes.

The best part is the engine breaking sytem it has. It is somehow linked with the trailer brake controller when in the tow/haul mode, it automatically downshifts to help slow you down.

Scott