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Spark plug life

Old 07-27-2007, 01:59 PM
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Join Date: Jan 2007
Posts: 157
Default Spark plug life

How many miles can NGK Iriduim, V-power, G-power, go for before changing? Which one improves gas mileage and better acceleration the best?
Old 07-27-2007, 07:28 PM
deserthonda's Avatar
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Default RE: Spark plug life

depends on driving habits
mostly city or hwy driving ??
Old 07-27-2007, 08:53 PM
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Default RE: Spark plug life

Well....I'm past 90k on OEM irdiums....and it drives like day one from the dealership. I may change them just to see the difference though. I abuse my engine so irdium tipped sparkies are pretty durable.
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