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With all due respect, I am not starting another bore scoring thread--just stating the facts relevant to your initial oil analysis.
I STRONGLY suggest you watch the Porsche Club of America's 4-part Youtube video on bore scoring to get the actual facts on the causes of scoring (which do not comport with your assertion).
The videos are entitled "How to Prevent or Slow the Progression of Bore Scoring in your Porsche M96/M97 engine." I recommend you watch all four videos.
Good luck.
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