update mpg 5th gear f150 ecoboost

I drove our police departments F150 Ecoboost on a 300 mile, all highway run to break it in some before it was subjected to the rigors of patrol duty. The highway speed limit was 67mph (110km/h) and I obey it. Terrain was flat, no A/C needed at the time, and winds were light. Truck is a crew cab, 4x4, 3.55 axle, shortbed, (k9 veh now). I got an average of 21 mpg (~11L/100km). Power was impressive at any speed, transmission shifted funny and had some weird shimmy sometimes. Interior (road) noise was much higher than I expected.