Thread: Spark plugs
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Old 10-30-2011, 04:35 PM
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snrusnak snrusnak is offline
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Quote:
Upper plugs are OEM Bosch PN FR8TE2 Copper Core. Lower Plugs are OEM Bosh PN FR8T1332 Iridium Core.
Now I understand why the top rows need changed more often, iridium lasts much longer than copper.

Quote:
I didn't know this engine had 16 plugs....so when do you all recommend changing the "bottom ones?"
I'm pretty sure it says in the manual/service schedule, but from memory I think it's around 100,000 miles for the bottom rows (iridiums).
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