after redoing my waterpump pressure appears to have increased and now I notice that I've got a little leak out of one of my freeze plugs just below the exhaust manifold. Dealer didn't want to believe it saying theyve never come across this before and insisted at first that it's a head gasket leak. Well, I hope I'm lucky since it is indeed the freeze plug. How to remove this do I just hammer in a big screwdriver and twist it out?? or might there be threads for screwing in a heating element. The car is a 1989 300e. any help much appreciated. If it just pops out with a screwdriver, I imagine it the plug will also need some kind of sealer... silicon rubber OK?
cheers, guenter