I don't seem to have the trick to get this plug to seal. New washer ring in place, have it cranked down firmly but don't want to reef on it (aluminum to aluminum). Silly thing still weaps oil.

Am I doing something wrong or should I just cave in and use some sealer on this thing?

Had this problem on the last couple go-rounds with my various M30's. Maybe I should go read the FSM and see what they suggest...

Jeff