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Re: How Many Ways Do Ford 5.4L Spark Plugs Break?
Posted to Technical Tips Forum on 6/28/2016

Yeah, usually, if you get them at 80,000mi. , you can get them without breaking. Mileage means nothing if you're working on fleet vehicles though. Last job I had was on a municipal fleet. We had cars, especially police, that ran 24hrs./day.. Mostly in town. Se... Login to read more.