Well I guess it's that season again in the Northeast.....

My gas mileage went from 25-29mpg to 21-23mpg

 

I too hate it. I have been keeping track of my mileage for many years and found the oxygenated gas lowers it by 10%. I sure hope the emissions are a lot better with it to make up for the extra gas needed to go the same distance. I would be interested to find out if it does burn about 10% cleaner. Could you imagine if it doesn't? It cost more, less mpg, and of course less power.