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The chain ramp plastic debris problem is greater than the small size of the particles ?
If you've had an M96 apart ,you'll have seen how tiny and clog-prone some oilways are. One example- the oil squirters aimed at the underside of the pistons. One plastic particle would pass through that oilway under pressure. But if the particles accumulate and/or adhere with other contaminants/debris it could be the beginning of a lubrication related failure.
The best remedy is obvious - replace the offending ramps promptly and carefully monitor for debris in future.Better, replace them proacively before 70 k miles? But the time, the cost, you'll be without your car, it might not be a problem - yes all those excuses and more.
But what about the debris distributed elsewhere in the engine? In a conventional engine you could flush with a high detergent oil a few times. I doubt the experts would recommend that in the M96 ?
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