During Four Wheeler Magazine's test of the Ford EcoBoost 4WD for the title of "Truck of the Year," they had one instance where the engine got too warm and it sort of went into a "sleeper mode" as it cooled down. They described it as a sluggish loss of power.
They also had one tank of gas that didn't get the fuel mileage it should have. Not stated just what, such as type of driving they were doing when that happend.
This is unacceptable to me in a 4WD hunting truck. It must deliever full power at all times, especially when under stress. E