Hi! I just bought an amazing 1986 granville with a 22RE. It has 41,000 miles and has been switched over to mobil 1 10w30 oil by the previous owner.
He warned me that i may want to switch it back to conventional oil due to some things he read about it possibly being a better choice.
I did a couple google searches and see that the detergents in synthetic oil may cause seals to leak but cannot confirm. Has anyone had an issue with using synthetic oil? Thanks in advance!