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Well there's not many hits for spark plugs in the corner of the forum. Does this mean that OEM is fine? Does anyone have any strong opinions?

Andrew

are you suggesting I'll have to stop using diesel ??

I replaced mine last year and chose NGK Iridiums as opposed to OEM. Why? Iridiums give a stronger spark and I do not intend to go 40-50K before replacing them. The four prongs on the OEM's are primiarily for longevity.

Thanks Bling. Excuse me being a duffer but what does the stronger spark mean to me? Also how often do they need to be changed if less than the OEM recommended 40,000?