Doubt our beloved PTs NEED 10mm, but it's your money..
As explaination for the double platnums, old cars had a single coil and the DC spark travelled in one direction. On modern (distributorless) cars, each coil feeds 2 plugs in series. This means the spark travels (for want of a better description) up one plug and down the other. When you pull out the old plugs, notice the wear. That's why if you are going to buy platinum, go double.
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2004 Dark Plum Base with windows tinted, cabin filter, silencers removed, fog lights, 18\'s, all Red taillights, Blaine\'s struts, modesty cover, color-matched center dash, 06 rear bumper
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