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JFairman JFairman is offline
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Join Date: Jul 2006
Location: S. Florida
Posts: 7,265
I've used the bosch W3dpo (expensive oem platinum sparkplugs) and bosch W4cs which have a silver electrode and I can't tell any difference.

NGK plugs are just as good.
Old 07-29-2009, 01:39 PM
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