The galley plug is behind the flywheel on the oil cooler side of the case .
I will tell you it is very,very rare that this plug will leak on a type-1 case. These plugs will blow out on type-4 cases ( your bus) Ask Travis about that.
Sometimes type-1 cases will crack from the galley plug ,up the case (about 12:00 o'clock) and are hard to see when the engine is cold. I have seen my share of oil leaks from the camshaft plug (center case below flwheel).Most of the time these leaks don't coat the engine compartment down. They leak out the bottom between the engine and tranny cases.
On your other car, You could start it and warm it up (if it isn't noisey) Take your oil filler cap off and rev. the engine and see you have excessive smoke coming from the filler spout. This could indicate a ring problem or burned piston.
Do you have any history on this engine that you can belive ? I would think twice about just replacing the rings. I have seen a lot of engines blow up after a ring job . Its not a good idea to put rings or even piston and clylinders on a engine with high mileage and not knowing what kind of condition the rod and main bearings are in. If they are worn out, the new rings could put a lot of stress on them and "out they will come".
When I was in VW school, all you had to do was mention replacing only the rings to "Get The Look" from our instructor. He told up that ring land on the piston could wear out before the ring would and a tight new ring COULD jerk the top off a piston through the ring land groove. He was right. I've seen it happen.
