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Originally Posted by DrRoentgen
Bruce, I read in an Excellence post that the variocam is effected by the oil choice, do you know if that is true?
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I have heard that and it is conceivable. I don't think any quality synthetic that meets Porsche spec will be an issue.
One thing to note is that the current M1 15W-50 is NOT the same formula that was specd out in 1997. The current version is rumored to be a "make believe syn" rather than a PAO syn.
When all is said and done, I would go with the M1 0W-40, which is apparently still a PAO syn.
Safe vs sorry.
Hope that helps.
