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2006 Boxster 1st Oil change and odd noise
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12-12-2005, 06:48 PM
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Brucelee
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Join Date: Jun 2004
Location: Des Moines, IA
Posts: 8,083
One of the more credible tests of M1 and Amsoil indicated that they were shot at between 10-12K miles, depending on oil comsumption.
That did it for me.
Brucelee
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