For all those who dislike the Champions, I just pulled my original plugs (Champion 507's) about 2 weekends ago and the truck has 65k. I only changed them because it was a long weekend and I needed something to do and not be bored. They never skipped. My MPGs were as normal. I pulled them and they looked like new. No carbon, No crustation. No excessive wearing. Im sure I could have left them in and keep driving for a long time more.
But I did go ahead and replace them and I went right back in with Champion 507's.
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