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Anti-seizure compound on spark plugs? V70-XC70 2000

I recently replaced the spark plugs and had some trouble to unscrew the old ones. Quite a lot of effort was needed due to carbon deposites in the threads. I am worried the threads in the head took a lot of punishment.. Would it be a good idea to use copper-based anti-seizure compound on the new plugs? Is there any negative side-effect? Or is it a better idea to unscrew the plugs at 50% of the service life just to clean the threads? Any suggestions?
Engine B5244S -00 90000km, plugs replaced at 50000km last time

Best regards
Erik






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New Anti-seizure compound on spark plugs? [V70-XC70][2000]
posted by  Erik A  on Sun Nov 7 03:31 CST 2004 >


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