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Old 08-05-2001, 08:29 PM
Posts: n/a
Actually from what I've heard, the reason for the change from 92 to 91 is due to the phasing out of an additive called MTBE. They now use ethanol as a substitute for MTBE, which was outlawed because it was found to pollute groundwater. I don't really believe this since other states have 92 & even 93 octane gasoline and don't use MTBE.
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