"Don't tell FoMoCo, but I just put the Green into my '04, 5.4 F150 and you cannot believe the difference. With 5w20 I heard all kinds of internal noises, but now all I can hear is the fan sucking thru the radiator. Gas mileage doesn't appear to suffer any either. I am totally sold on the Green"
WOW, I have the same setup, I may have to try this. Hopefully the gold stuff will be as good. This might be an interesting little experiment. Running Pennzoil 10w-30 right now and could tell no difference in sound from the Pennzoil 5W-20 I ran in it.