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i'm getting ready to do my 1st plug change, do you guys always change out the coil packs too or do you wait till there's a problem, thinking about doing the coil packs every time too, truck will have 25,000 miles on it and plan on changing them every 25k, any advice would be helpful thanks
 

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No, plugs only and coil packs only if there is a miss fire.
 

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Approaching 120,000 on mine with the original coils. Did change the boots on the coils when I changed plugs. Used anti-seize and dielectric grease.
 
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