Oil on Spark plug threads?????
I was inspecting my car the other day and i found that the spark plugs had oil on the threads but no black burn off on the plug. I drive a 98 ITR, this motor used to be turbo charged before i bought it, it burns oil (thought the rings might be bad). i have not done a compression test yet but was just wondering if anyone knew what the oil on the threads of the spark plug could mean????????







