Originally Posted by Nuke
He needs to get a second opinion. What prompted him to get this "diagnosis"? The 4.6L is notorious for a puff of smoke if the engine is started, shutdown quickly (cold) and then on the subsequent start... puff. But this doesn't warrant an engine rebuild.
well he had oil coming out the back of his exhaust (actual oil, not just condensated water) and when he looked in his oil pan there was hardly any in there - i haven't heard him mention any blue smoke but he took it to the dealer and they said the piston rings were bad and recommended a engine rebuild or replacement.