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Old 03-25-2012, 03:32 PM   #9 (permalink)
EcoModding Lurker
Join Date: Sep 2011
Location: Minnesota
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wisconsin vs minnesota gas

Have you noticed a difference in mileage from Wisconsin gas vs Minnesota gas? The Mrs just took a trip from northern MN to Madison 400 miles one way. She noticed with the scanguage on the way out she was getting 21.5 mpg at 80 mph and on the way back with WI gas it was 19 mpg at 70 mph. She didn't think she was going into a headwind on the way back, and the 19 was consistent between the westerly and northerly portions. To add to the discrepancy one tire went from 45psi when she left to 35psi when she returned 4 days later. Temperature was similar.
My thinking is the gas in WI has more ethanol. I'm be curious to see if others have experienced a similar drop with one state's gas vs another.
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