Ethanol-enriched fuel was a clear winner at the 55th running of the 12 Hours of Sebring, the first time the renewable fuel was used in an endurance race format. The LMP2 class was won by Andretti Green Racing featuring the Acura ARX, while Corvette Racing took a first in the GT1 class. For the first time ever, both cars used a 10 percent ethanol-enriched blend.

In January, the Ethanol Promotion and Information Council (EPIC) along with the American Le Mans Series, announced that E10 would become, “the official ethanol-enriched fuel” of the series.

“Ethanol has once again demonstrated its performance pedigree in the most demanding environment in motorsports,” said Tom Slunecka, executive director of EPIC. “Ethanol demand has been spurred, in part, by consumers’ growing confidence of ethanol. Nothing demonstrates the performance benefits of ethanol better than high tech race cars under the lights at Sebring.”

The next round of the American Le Mans Series is the Acura Sports Car Challenge of St. Petersburg. The race will start at 5:05 p.m. ET on Saturday, March 31.