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Sounds like a lifter ran temporarily dry.
I had that happen at a PDS where we were doing successive skidpad exercises in one direction and oil pooled on one side of the engine. I was also running with oil level 1/2 way on the gauge. One of the local performance shop owners recommended to always run with oil at the very top of the measurable gauge without overfilling to avoid running lifters dry or worse. I followed his advice and never had this issue again.
Always check oil when the car is warm.
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2009 Cayman 2.9L PDK (with a few tweaks)
PCA-GPX Chief Driving Instructor-Ret.
Last edited by Topless; 08-25-2014 at 05:59 AM.
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