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Don't know that I've ever seen any head to head spark plug tests. I've used Bosch Platinum +4 since they came out (1998 I believe) in all my vehicles. Never had a plug failure with them like the older single tip plugs. Also never have to gap the +4 plugs. I change them after about 60K to 70k miles. Probably could let them go longer since I do not notice any difference in performance after changing them.
 

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30vVT said:
just kidding, splitfires are a scam. Just get whatever stock is. I think they're NGKs
Get the NGK stock platinum. I replaced mine with these. Also when I had a Maxima before, that too used NGK platinums which worked great!
 
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