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Old 12-11-2013, 07:48 PM   #21
Jager
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Join Date: Jul 2010
Location: California
Posts: 1,859
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The EPA use to mandate minimum proportion of oxygenates be added to automotive gasoline on regional and seasonal basis… Is that still going-on? This was done to reduce pollution during the winter months. I always noticed improved performance but mileage declined.
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