Thanks Kevin,
and yes, I did get the ecoboost.
love the engine, I drove up little cottonwood canyon, set cruise on 40mph, it settled in at 4th gear and 1750 rpm, and never downshifted. 5-7 % grade, and went never above 1800 rpm. Mind you, this is a 6000lb+ truck.
Filling a 36 gal fuel tank...