Thread: NGK Spark Plug
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Old 08-24-2008, 09:23 AM
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Pablo Pablo is offline
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Join Date: Dec 2007
Location: Duvall, WA PNW
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Default Re: NGK Spark Plug

In the desert or so cal, a 6 is best.

IMHO a 6 is the best bet for most of the country, with a 5 being a good selection for the cooler northern months.
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