Iridium plugs normally last 100K miles, but they cost a bit more...
...than conventional plugs. My Tacoma came with conventional plugs, and Toyota recommends a 30K mile change interval.
I'm OK changing them every 30K miles. Gives me a chance to give the engine a good "look over."
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In response to this post by AZHokie59)
Posted: 09/18/2020 at 6:09PM