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Old 03-01-2002, 10:58 PM
chowpit chowpit is offline
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Join Date: Mar 2001
Posts: 326
I replace mine every 15k miles. The plugs start to show significant wear around 30k miles. I would recommend no more than 30k on a set of plugs.
Scott Diener
89 300E
93 300E
92 Volvo 740 Wagon aka "Mutt mover"
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