I agree with everything you said. Everyone should be aware that their are issues with discounted prices. But the plugs were identical even down the the writing on the plugs. As far as if they last 100,000 miles. I would never let my plugs go that long no matter what the dealer suggests. One batch of bad gas could foul out a plug. Maybe not enough that would cause any real noticeable differance. I never had a problem the car skipping, etc.. but I do feel that the X is alittle more responsive. I would not have found this out for another 32k miles.

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