I don't see any oil around the valve cover, unless it's a seal at the bottom of the long hole where the metal tube goes around the spark plug.

It was running a little rough, it seemed like it was running on about 2 cylinders with all of the oil on the other two plugs.

I'll keep an eye on it to see if I still am loosing oil by the plugs. If it needs a rebuild I'll let it go we have 185,000 plus miles on it.

Richard