[JMatta]

First I recommend you replace the drain plug with the LN magnetic version...much more robust and collects any metal that may be in the oil. Sounds like whoever changed the oil on the car last didn't use a crush washer and probably used a drain plug from some other vehicle (the factory ones are cheap and strip easily). Also, change your oil with a good synthetic every five thousand miles or annually, whichever comes first...extended oil changes are not kind to the M96 engine per documented used oil analysis.