Switching to my wifes Impala and her driving.
E10 3 tank average is 28.62 converting that to E0, it should get 29.69. Calculated E85 mileage is 21.26, most recent 3 tank E85 is 24.5 mpg, (15% higher than it should be).
This data or I should say my wifes driving is erratic & unpredictable at best. Her work commute is 4 miles of 55 mph, but somehow goes thru a tank every 2 weeks or less.
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