99 S420. 47,000 miles. Car had sat for about 5 days not used. I checked the oil dipstick and along with the oil came 2 small peices of plastic shavings (size .25cm). My question is what are these things? Where have they come from? Why didnt the oil filter get this? The oil was changed at the dealer 2000, and 3500 miles ago. The only new engine internals have been oil pump.