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Thank you Charles. Running higher oil temps to eliminate water and then offering long oil drain intervals as a marketing tool is the best explanation I have heard yet for Porsche running 180 T-Stats. Thanks to your research we know this was misguided. Running lower engine temps and changing oil more often has two benefits: The motor runs better and lasts longer. Makes sense to me.
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2009 Cayman 2.9L PDK (with a few tweaks)
PCA-GPX Chief Driving Instructor-Ret.
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