It was service time, so up on ramps she goes. Castrol TWS oil. Porsche guys think your mobil 1 is expensive? You have no idea. After draining the oil out the bottom, the filter was next. On the bolt holding the cap on, there is an o ring to replace, as well as a aluminum seal ring Since the filter housing is right there and upright, you can add almost a quart of oil to the housing/filter to reduce oil …

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Had a buddy bring over his beautiful M3 the other evening to change the gear oils.  Not a big job, but a littler tricker to get in the air than the Porsche’s are, but after a couple hours he was back on the road.  Most of the transmission experts I have talked to in the German auto world recommend changing your drive gear fluids annually.  The transmission says lifetime fluid on it, but that is a joke IMHO.  Nothing kills …

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