Iridium spark plugs
04-13-2013, 06:09 PM
#2
4th Gear Member
Join Date: Nov 2009
Location: SoCal
Posts: 1,826
No, it isn't.
The only advantage that iridium/platinum/unobtanium etc. plugs have over copper is a longer service life. Coppers typically last 15-25K, and the others are usually good for 50K plus, which is why manufacturers use them in new cars, so that they will not have to service them within the warranty period of the vehicle.
From a standpoint of performance, copper is the better of the various conductive metals out there. If you don't mind replacing them more often then run copper, otherwise go with a stock replacement (usually platinum). Don't let yourself be fooled or upsold to any gimmicky plugs that promise an extra 5 hp and 2 mpg, it's all bullsh!t. A spark is a spark, period.
The only advantage that iridium/platinum/unobtanium etc. plugs have over copper is a longer service life. Coppers typically last 15-25K, and the others are usually good for 50K plus, which is why manufacturers use them in new cars, so that they will not have to service them within the warranty period of the vehicle.
From a standpoint of performance, copper is the better of the various conductive metals out there. If you don't mind replacing them more often then run copper, otherwise go with a stock replacement (usually platinum). Don't let yourself be fooled or upsold to any gimmicky plugs that promise an extra 5 hp and 2 mpg, it's all bullsh!t. A spark is a spark, period.
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