Are these spark plugs ok to use with our car?
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If they are not ok to use then what would be a good 2 range colder then stock spark plug?<ul><li><a href="http://www.zex.com/store/merchant.mv?Screen=PROD&Store_Code=ZX&Prod uct_Code=82003-1&Category_Code=HSP">Zex Plugs</a></li></ul>
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