3 responses

  1. Bob
    October 13, 2011

    I have a 2001 Buick Park Ave. and replaced the Iridium spark plugs with Platinum plugs and see no difference in performance or mileage. I change my plugs every 50,000 and have had no problems. I switched because of the cost and more importantly the length of time the plugs are installed. The longer the plugs are in the engine, the harder they are to change and more likely they will seize up and break when replacement is necessary.

  2. Billy
    March 24, 2012

    Use anti seize Bob. I’ve had my plugs in my 5.9 Durango for over 100,000 miles and they came out like butter.

  3. E. Raab
    January 9, 2013

    There must be some benefit gained by the Irdium series of spark plugs, since so many are supplied OEM on the vast majority of new cars(requiring an initial plug last ~ 100K miles)

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