D Dallas New member Mar 31, 2010 #1 I would like to use a 20-50 synthetic oil in my stock 74 ci Superglide. Co - workers tell me that my old style gaskets won't hold up to synthetic oil. Anyone one have info , no he said she said stuff . real answers
I would like to use a 20-50 synthetic oil in my stock 74 ci Superglide. Co - workers tell me that my old style gaskets won't hold up to synthetic oil. Anyone one have info , no he said she said stuff . real answers
