Originally Posted by Stormrider151
I just got a 2012 FX4 with Ecoboost and max tow. I'm still having a hard time wrapping my head around where all the power comes from.
One of my best friends has one, and tows his 9,500 lb GVWR fifth wheel with it. The truck pulls like a bear, but uses lots of gas to do it.
And he notices that if he gets into the turbos at all when driving without the camper, his mileage isn't very good. It only gets the advertised mileage when driving 50 mph.
Bottom line, power comes from fuel. There are ways to tweak it a bit, but you just can't fight the laws of thermodynamics!