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Old 04-16-2013, 09:20 AM   #11
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Join Date: Sep 2004
Location: Atlanta
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i just read up on octane ratings. aparently, the RON & MON measurement methods actually use a running engine! shocking. at any rate, the anti-knock index (octane rating on the pump) is related to the performance of the fuel & not necessariliy to the CONTENTS of the fuel.

also, turns out E85 is only like 96 octane. looks like 93 octane is probably 93 octane, regardless of E content.
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