Every 5k with synthetic Mobil 1 (Delvac 1 in the D), all cars. All seem to run as-new.

Only time I vary is with track events-beating on the 500 I try to give it a change right after, regardless of mileage.

And after sucking the oil out of my M119 motor with a Topsider, NO oil come out of the drain plug orifice

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"If God had meant for us to walk, why did he give us feet that fit car pedals?" Sir Sterling Moss

Michael
2014 E63S Estate
2006 SLK55
1995 E500
1986 Porsche 944 turbo