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Old 11-14-2008, 08:56 PM   #13
roadracer311
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Join Date: May 2007
Location: San Francisco, CA
Posts: 218
I changed mine at 20k miles and 4 years. I'd be worried that they'd bond themselves to the head if left too long.
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2003 Boxster S
1995 Ferrari F355 Spider
San Francisco, CA
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