mrmikesdeuce Posted June 13, 2022 Report Share Posted June 13, 2022 Iridium spark plugs. Do they make any difference in performance or mileage? Has anyone tried them ? Quote Link to comment Share on other sites More sharing options...
1004ron Posted June 14, 2022 Report Share Posted June 14, 2022 Iridium, Platinum, or what I'm using now Ruthenium, aren't expected to offer performance gains, but longevity. IIRC the stock plugs in many of the later models is Iridium. Please add you M/Y to your profile signature - https://www.fordedgeforum.com/settings/signature/ Quote Link to comment Share on other sites More sharing options...
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