[Cupcar]

1209 is clear and one can see the ooze from the joints just fine.

993 sealant strategy is same as earlier cars except the joints where the 993 uses rubber seals at the camshaft and chain housing covers.

Here, I am not sure if it is best to use Dow 111 only or to use some kind of sealant where the gaskets plug into the covers - not where the gaskets meet their opposite mating surface.

The magnesium chain housings need to be free of corrosion and flat, if not a surface grind using emery on glass seems to work fine. Be careful here not to remove any more than necessary particularly where cover goes to crankcase.