Quote:
Originally Posted by ALS
I had pretty much came to the conclusion it was the mandated E10 fuel that was causing the loss in fuel mileage.
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Not only ethanol has a lower energy density than gasoline, a higher blend of it is used in order to fix the octane-rating of a lower-grade gasoline. It's happening here in Brazil, where the mandatory blend had reached 27% last year (25% for certain premium gasolines).