G
Gary D
Guest
I have 1989 454 Crussaders 
I have 1989 454 Crussaders (350HP)with about 900 hours on them. A friend of mine is telling me to switch to a full synthetic oil- he's an ex GM guy that has done oil studies and swears by synthetics. Is this recommended? If so what weight?
I have 1989 454 Crussaders (350HP)with about 900 hours on them. A friend of mine is telling me to switch to a full synthetic oil- he's an ex GM guy that has done oil studies and swears by synthetics. Is this recommended? If so what weight?