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Re: Danny M3s: Myself I would cut the mileage between changes.....and definitely watch for a spike in copper if you didn't want to change the bearings as a precaution.
General: Camshaft wear was one of the subjects that came up in the discussion I had with Castrol's advanced technical support in the UK on changing away from the OEM 10W60 oil. You would want to be absolutely sure that any oil you went with can withstand the load on the oil film between the lobe and the lifter. The S65 requires extra strong valve springs to stop valve bounce at high rpms = extra load.
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