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iridium

  1. 4th Generation Spark Plug Results

    4Runner
    FWIW, I'm posting this for those inquiring minds who wonder what an iridium plug looks like after 8 years and 120,000 miles. The vehicle was running fine, but I figured I'd gotten my money out of the set I installed in 2011 at 60,000 miles (right at 180,000 this morning). Really pretty...
  2. Spark Plug replacement HOW-TO w/ pictures

    1Gen-Sequoia
    While searching for info on spark plugs (e.g. platinum vs iridium, Denso vs NGK) I noticed that there were quite a few members asking about how to change their spark plugs, but there didn’t seem to be any write-up on the subject. Having just purchased 8 NGK Iridium IX plugs (part # 6418) and a...
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