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Just noticed this sticker in the engine compartment, pointing out that you should not replace the IS300's Iridium spark plugs with anything but.
So what's the deal with Iridium plugs? I thought Platinum was the hot ticket. Am I right to assume they will cost like unobtanium?
So what's the deal with Iridium plugs? I thought Platinum was the hot ticket. Am I right to assume they will cost like unobtanium?