I removed my oil drain plug on my Westerbeke 40 several years ago before I learned that I could pull the oil out of the dipstick tube.
It was OK for quite some time, but has started a slow drip. I have removed it twice. First time I applied some gasket goo, and it seemed to help. Then it started dripping again. Second time, I got a whole new drain plug and gasket and did not use goo.
Still dripping.
There was some old gasket material left on the flange on the oil pan that I have tried to scrape off. (Very difficult to reach!!)
I need to check for a crack or leak elsewhere, but I think it is the plug.
Any suggestions?