I searched the forum and found one thread about this but didn't get a definitive answer to my particular question. 66 Polara with a 318 Poly. I checked my plugs yesterday and the ones closest to the firewall on both sides were fouled with oil around the threads and the ceramic.
What's causing this? Valve cover gasket? What are the possible culprits?
What's causing this? Valve cover gasket? What are the possible culprits?