My 1973 Beetle's engine had a small oil leak.

When I changed the oil recently I noticed that during the last oil
change, I had forgotten to remove the sealing washer from the drain
plug. So it had two sealing washers on it.

That was probably the cause of one of the leaks.

To fix the leak I put a dab of Permatex bronze rtv sealant on each of
the sump plate studs right before replacing the sump plate.

I also put the same rtv sealant on the threads of the drain plug.

Now it doesn't leak.

Has anyone got any tips on replacing the sump plate studs?

Mine are coming loose. I want to buy new studs and cap nuts and
install the studs with red Loctite.

I thought that after draining the oil I would spray out each stud
hole with carburetor cleaner and let it dry before installing the
studs with the threadlocker.

...thanks again!