The City of Watertown, S.D., is transitioning its entire gasoline-fueled fleet to exclusive E-30 use. E-30 is 30% ethanol blended with unleaded gasoline. Ethanol is produced in the city using corn grown by local farmers, according to Dakota Broadcasting.

The fuel producer’s tests show that E-30 blends can increase available horsepower and torque with the same or just slightly different fuel economy, according to the news source.

The Police Department and Street Department have been using E-30 with no negative effects. The price is 30 to 40 cents less per gallon in comparison to E-10, which was previously used, according to the Watertown Public Opinion.

Earlier this year, the South Dakota governor announced that the entire state fleet of gasoline vehicles will be fueled with E-30.

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