Permatex ultra black on them when you install the new ones.
KH


"trainfan1" wrote in message
...
Calif Bill wrote:

Go to a good auto parts
store and buy a couple of new plugs. They are not reusable. They will
run
you a buck or two each. Then you drive them into the hole. Add a small
amout of Permatex sealant on the edges before driving.
Bill


Go to a ship's store or engine builder - you need brass freeze plugs
for your marine engine.

If they come out while under way, your bilge can fill pretty fast.

Rob