The last time the service dept. at my Ford dealer changed the oil in my Expedition, the service sticker indicated "5w20M/C". The 5w20 part I get, but what does the M/C stand for?
He bumped my change interval from 3K to 5K, is there a relationship to my first question? Maybe he is now putting in a synthetic blend. Any idea?
He bumped my change interval from 3K to 5K, is there a relationship to my first question? Maybe he is now putting in a synthetic blend. Any idea?