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Old 07-01-2009, 02:10 PM   #3 (permalink)
EcoModding Apprentice
Join Date: Jun 2008
Location: Cambridge, ON
Posts: 240

Jalilah - '07 Chevrolet Cobalt LT
90 day: 40.57 mpg (US)
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If you put lead in your oil, when you suck oil vapors through your PCV valve, and it burns, and goes through your cat, it will poison the catalyst and destroy it in quick order.

I would not recommend using this product on any car that will have to pass an emissions test at some point.
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