Also had leaking timing chain covers on my 1994 964. Decided to tackle it and it wasn't too bad getting at the one on the driver side--the main culprit. Looks like passenger side will be much more difficult though, need to get the AC bracket off.
Just removed the driver side cover and here are some picks. Does this look normal with all the gray muck on the surface of the housing and gasket? I assume this is some sort of sealant but seems to have also gotten on some of the internals too.
Does not look to be easy getting this stuff off, is it OK to use something like a very fine cross-buff to take it off?
Also, should I also use a sealant with the new gasket. I've used Permatex Right Stuff on other cars but is there something better for these covers?