Do NOT waste your money on Iridium plugs.
They will not last any longer since it has the same ground electrode as any other non-double platinum plug. (Funny they fail to mention that part eh)
Also NO plug will magically generate more power than another properly operating plug. Do not be mislead to believe otherwise.
The best plug to run is a Motorcraft or Autolite double platinum.
They will give you solid operation and the best longevity and are only $3.99 each (cheaper with sales or rebates even)
