I used Motor Craft in my truck I gave it 3 changes (15k), and I hated it, it doesnt hold a candle IMO to any of the other diesle oils out their. The truck started hard, I had ticking noises, and the truck just didnt feel right...Can you run synthetic oil in a powerstroke? My father in law hauls stuff coast to coast and wanted to ask. Someone said he couldnt because it would ruin fuel injectors? Sounds fishy to me.