I have a oil drain plug gasket I purchased from Macs Auto .. part #A6734C ... its the original style copper ring one side is solid copper the other side has a small open grove with a white material in the grove that I think is a type of asbestos .... does any one know witch side of the gasket faces the motor .... thanks for any help ... Joe
The copper side
Piggybacking off this, how often should it be replaced?
Every time you change your oil...otherwise it may leak...and more than just a little too.
When it leaks. Mine's been there for decades.
According to the repro parts books they were brass.
My '24 has a solid, dead-soft copper gasket under its drain plug, it appears to have been on there for decades. Apparently if re-conforms to seal each time it is tightened, because it has never leaked in the three years I have had the car.
This is one of those minor items where I'm willing to go modern. The fiber gaskets are 20¢.
Modern? Now I don't know what to believe anymore...
General question about copper gaskets / washers. I once worked with a guy maintaining a bunch of piston engine airplanes in Alaska. One of my jobs on engine maintenance cycles was to "aneal" (pardon if my spelling is off) the copper washers that were used between the spark plugs and the block. I would give them a quick sandblast and then heat them to red hot with a torch and dunk them in cold water. I did was I was told. Thinking through it, is this a way that one might re-energize the life of a copper gasket. Not that they are that hard to swap out, but this would be too simple if it works.