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For all you'll that are putting off spark plug replacement. I got a miss on my Bronco 2 and looked up when I replaced spark plugs only 177000 miles ago - I think I got all the fun out this set. 177000 miles Bronco 2
That’s pretty good. You saved yourself tens of dollars by waiting.
Back when hen I worked at Slopar dealership, I tried to sell spark plugs on a minivan but the customer declined. After all the van ran ok. The center electrode was worn down so far it was actually below the ceramic!