Originally Posted by Rollin1Ton
What about using synthetic oil? Any better or worse?


Many older types of rubber & rubber / cork gaskets (and many RTV sealants)don't hold up well to synthetic oils.


BC
1960 Chevy C10 driver 261 T5 4.10 dana 44 power loc
1949 GMC 250 project in waiting
1960 C60 pasture art
Retired GM dealer tech. 1980 - 2022