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Engine pulled and in teardown...
A year ago I discovered the exact same 'greenies' in my oil filter. About the same time my 01 Boxster S has also been suffering from 2 problems:
1) More occasional blue smoke on startup.
2) VarioCam stopped working.
Thus, the greenies could be related to either the valve seals or the Variocam tensioner. Good news. I've just pulled the engine and 90% through engine teardown. I'll post pictures and more info shortly once I uncover the root cause.
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