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Originally Posted by MNBoxster
... But, after this, remember, that several long-term studies indicate that more Engine wear occurs on Brand New Oil than Oil which has seasoned. As counter-intuitive as this sounds, Lab study of Oil samples finds that metal content peaks in the 1st 3k mi. and then tapers off to 10k mi. Your next change should be between 8500 and 10k mi. - this is the best thing for your new motor...
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That
is counter intuitive. I have always thought that the fresher the oil, the better protection I would have. As the oil became more "seasoned" its protective properties would slowly degrade until the protection approached minimal standards, at which time an oil change was recommended.
Is there some advantage in changing the oil between 8500 and 10K as opposed to the Porche's recommended time table?
Would your recommendation be the same for someone who drives say 4-5000 miles per season (May through Oct) and then puts the car away until the following season?
Thanks.
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