ethanol in fuels for the wee '06 model year Mpg FYI
okay for those that care, I now have enough data to analyze and the averages to be statistically valid.
this is coming from 2 years of data collection (34,000mi), takes into account ambient temp avg, humidity,avg elevation, and driving behavior: (you should see the spreadsheet)
10% ethanol 87 octane, 47.71mpg
100% gas 87 octane, 49.83mpg
10% ethanol 89 octane 47.69mpg
100% gas 89 octane, 49.81mpg
10% ethanol 91 octane, 46.93mpg
100% gas 91 octane, 48.37mpg
Big freking deal, I just did this because I had a class project in statistics a few years ago and since I had to set it up I just kept adding data. now I know for me run 100% gas 87 octane.