how often should spark plugs be changed
Factory installed iridium spark plugs will easily go 100,000 miles. HTH. -Jim
I am a fan of Iridium plugs, too.
I have 150,000 miles with no problems. Do I need to have it done or wait for problems?
I'd recommend doing it now, Robert. Preventative maintenance is always better than getting broke down somewhere. HTH. -Jim
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