Using Synthetic Oil in Classics

[Ozsum67]

Guys, help me out here. HOW can a synthetic oil of a given weight leak through holes that a conventional oil of the same weight cannot? I can (maybe) see that 5W could possibly leak from an engine that had no leak with 30W but come on. Either your engine has a leak or it doesn't, "slickness" of the oil does not CREATE leaks.

OK, I'll help you out. What you are saying is correct. Lot's of old wive's tail rumors floating around out there. The only way it can make an otherwise non-leak, is if it is a higher detergent and it somehow scrubs gunk away inside the motor where this gunk was acting like a stop leak. There you go,