We operate a 2011 F150 ecoboost. The 3.5L engine seems to be significantly smoother and more "tick" free with M1 EP oil vs standard M1 or Valvoline syn. Not sure why. The truck has done a number of trips up and down the East coast. So, frequent oil changes are the norm.
Interestingly, the 3.5L will start idling roughly when an oil change is due. Even though the oil life monitor shows remaining life.
I suspect oil dilution, or degradation, or a combo of both. We seem to be able to get 6500-7500 miles per oil change.