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Copper vs iridium plugs for modified car?


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On 10/14/2024 at 7:17 AM, luke gtr said:

Pro tip:

If your car doesn't run, you don't need to change the spark plugs.

I'm at 8 years and counting.

That's generally how I handle it. I was surprised in NGK's response though. They stated on the low end, people replace them every pass and on the higher end, once a season. I'm confident I can keep them much longer than that as it's not a dedicated race car. 

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