Thread: Octane boost
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Old 05-01-2010, 02:21 AM   #30
eightsandaces
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Join Date: Feb 2009
Location: Buffalo NY
Posts: 828
I was always told leaded gas was bad for the catalytic converter, that's why they changed the nozzle at first too, so one couldn't make a mistake in the changeover years. The Fiat has a wide open 4" filler.
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