Iridium or Nickel Spark Plugs?
Its time to change my 2012 Jeep Grand Cherokee, 5.7L Hemi's spark plugs
(IAW Manufacturer's recommendation) and the dealer recommends nickel
plugs while a car care center recommends iridium plugs. I like the idea of the
longer life iridium plugs; however I am concerned about deviating from OEM
recommended plugs and read mixed reviews on the internet. Can you
please advise. Thanks...