SPARK PLUG: when to replace

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base sa mga nabasa ko dati,

regular plugs should last at least 20k km
platinum should last at least 40k-60k km
iridrium maximum of 100k km

parang ganyan, di ko na maalala kung saan ko nabasa. dito din sa tsikot yun e

[SIZE=2] For standard spark plugs, the service interval is typically every 45,000 miles. For platinum spark plugs, it is 100,000 miles.

I checked at

http://www.aa1car.com/library/cm1196.htm
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