Muscular Mustangs - View Single Post - spark plugs
Thread: spark plugs
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post #2 of Old 03-06-2005, 09:13 PM
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Why not just order a colder plug in the same brand and style you are using already? Usually if you goto a parts store with your plug part number and tell them you need it one range colder they can get it for you and might even have it in stock. This way you will have a colder firing plug, but still the platinum durability.
 
 
 
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