Everybody thinks they know best or they are too ignorant to care for the truth about motor oil.
If you want THE answer about what oil you can use in the 3v go ask one of its engineers. A 5w-20 isnt going to hurt it and neither will a 0-30, a 10w-30 wont either regardless of its so-called close tolerances. You have to keep your climate conditions in mind though.
Also, comparing a PRO STOCK motor with 1450 hp to a piss ant 4.6l 3v is not a good example but I think I know what you were trying to do though it doesnt apply.
But yeah, Greg, apparently you dont know why Ford moved to recommending the 5w-20. It wasnt for an engine's "Close" tolerances.
-Dan
If you want THE answer about what oil you can use in the 3v go ask one of its engineers. A 5w-20 isnt going to hurt it and neither will a 0-30, a 10w-30 wont either regardless of its so-called close tolerances. You have to keep your climate conditions in mind though.
Also, comparing a PRO STOCK motor with 1450 hp to a piss ant 4.6l 3v is not a good example but I think I know what you were trying to do though it doesnt apply.
But yeah, Greg, apparently you dont know why Ford moved to recommending the 5w-20. It wasnt for an engine's "Close" tolerances.
-Dan