[Caddylackn]

I found from experience running my '06 Crown Vic as a daily driver for 5 years in normal driving up until this gas crunch, that during October to March, when E10 is required here, I used at least 6% more fuel, which was like losing a gallon per tank. I went from about 290 miles a tank to about 270 miles a tank with mixed driving in my commute.

They claim E10 is for reduced emissions but I am using an additional gallon per week of E10. So about 6% reduction in gas mileage.