Hello again,
I notice everyone in a consensus over the oil on the plug threads being caused by the valve cover/spark plug hole gasket. When I had my 2K SVT, I noticed the same thing. The plug's threads were wet with oil and the plug tips were quite "normal". The plug wells, however, were dry as the proverbial bone. The spark plug threads are under the plug seat, so any oil there (on the threads) will have to be explained some other way, as the valve cover gasket is remote, at best, to be the cause. Some of you, I'm sure, have encountered oil in the plug wells. In this instance there would be oil all over the wrench flats, the porcelain insulator and the threads as the plug was withdrawn from the hole. This would indicate a leaky valve cover gasket.
I believe oil on the threads ONLY, is the result of an over-achieving PCV system.
...Ed
