Ditto on my 383 years ago. Thought it was a valve cover, cleaned everything well and found a drop would come out of the oil sender every minute. Quick fix. I can't believe people are saying "yank it out". Have they ever done that? I have done a re-ring on several engines with the block in the car. Easier than disconnecting from the tranny, etc. Many people do that. Easiest on a transverse 4 cyl since you don't even have to pull the steering link.
