I am not having a problem, but I drive a lot and will be at 200k within 2 years. Is this something I need to plan for on an m111?

I've never heard of anyone doing it, but I know that on some of the other motors, this kind of mileage might prompt one to do it.

Oil changes done every 5k since 60k, has 140k now. I'm a pretty hard driver though. You do have to wind these M111s sometimes

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former: 83 300D, 97 C230, 93 400E

current: 08 C300 Luxury , 92 500SL