The energy difference between a gallon of gasoline (no ethanol) and a gallon of gasoline with 10% ethanol is 3%. For the maximum 3% increase in mileage you may wind up paying 30% more per gallon. You can impact your mileage more than 3% by changing your driving style. The collection of water is not an issue if you are using the car regularly.
Quote:
Originally Posted by tibbetts
I find that my Mercedes runs better and gets better Mileage with ethanol free gas, Remember that Ethanol collects water.
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