Don't be concerned. Just plan on replacing it when your clutch goes out.
Mine is original and I no longer worry. The newer the model, the fewer have problems.
Just remember to drive it like you stole it and the IMS will remain well lubricated. That's what I do... The guys that never take it to redline always have motor issues.
These Porsche motors are really quite dependable. Only a small percentage of motors have IMS issues.
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