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I’ve been doing research on the potential IMS and bore scoring issues for my 2007 911 S.  The news I’m finding for this MY is encouraging as most issues seem to favor MYs 2005-2006.  That’s not bullet proof but it’s consistent with sources such as Flat Six Innovations and Porscheinspections.com, etc.  Seems the bore issue is due to a couple of factors, one being cold starts.  As I mentioned in a previous post, it seems the best insurance is 6 month/6k oil changes and avoiding cold starts.  Assuming the oil has to come to temp to protect the engine how long does the car need to idle to be deemed “in the safe operating temp zone” (I realize outside temp factors in).  Also would the 3rd radiator mod be a good idea?  

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That's just it. Don't let the car sit and idle. Turn the key, start the car, let it come off the high idle, maybe 60-90 seconds. And go. Keep the RPMs below 4,000 till the oil temps hits the 180s. Use a high quality Porsche A40 0W40 oil in the winter months.

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