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Old 07 Jul 2008, 05:48 pm
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Default Bosch Plugs?

Getting ready for a spark plug change for my 02 Touring PT. Looking at the Bosch platinum plugs. Any difference between the platinum+2 and the platinum+4? What do you guys prefer?
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Old 07 Jul 2008, 05:54 pm
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Default Re: Bosch Plugs?

I'm using Bosch dbl plats in my wife's '04 na PT. I decided to see how long they would last. After 65k miles I decided to change them even though the car was still running great. Yep, put Bosch dbl plats back in again. I'm sold on them.

Word of caution: Do not use platinum plugs in the turbo model. Because the turbo runs hotter they will melt.
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Old 08 Jul 2008, 08:11 am
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Default Re: Bosch Plugs?

welcome.
Is the + 4 the one with 4 electrodes? I don't buy the premise of that. Spark will find which one is closest and use that one only. How would you gap them?
Gap should be 0.040 (a TSB reduced it from 0.050 in manual).
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Traded in '02 Silver Touring Edition w/87,000 miles
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Old 08 Jul 2008, 12:34 pm
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Default Re: Bosch Plugs?

Bosch dbl plats come pregapped.
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