x2! They are Iridium plugs. And they

來源: jassco 於 2020-11-26 06:54:47 [] [舊帖] [給我悄悄話] 閱讀數 : (311 bytes)

last very long. You can replace them when one of them dies. I don't see points to replace all of them at certain mileage even though manufacturer recommends to replace them. If one of spark plugs dies, your car will run rough but won't die.

Best regards,

Alex

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