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Old Vs. New

45k miles on old plugs. Nissan claims 105K without a need to change.... i think not.

On the left is the stock spark plug>PLFR5A-11.

On the right is the new "colder" plug>PLFR6A-11 *BOTH ARE NGK

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Uploaded on September 9, 2010
Taken on September 8, 2010