Quite likely it will do damage.Hi will a 5w 30 semi synthetic oil be ok for a oil change ,as i have normally used mineral oil and have acquired some synthetic oil cheap GM dexos 1 5w 30 could it do any harm?
John.
Think you mean 20/505/30 is too thin,15/40 is preferable or 15/20 if the engines worn
Yes that one, thanks didn't spot that oneThink you mean 20/50