SIOUX FALLS — On March 29, the 88th day of 2025, the South Dakota Corn Utilization Council and Kwik Star are emphasizing their partnership with a first of its kind event, Unleaded 88 Day, to promote the use of ethanol-blended fuel across eastern South Dakota.

Between 8 a.m. and 8 p.m. on March 29, customers are invited to fill up their gas tanks with Unleaded 88 at any of South Dakota’s 11 Kwik Star locations for just $1.88 per gallon. A money friendly blend with up to 15% ethanol, UNL88 (Unleaded 88) fuel is approved for all cars 2001 and newer — and American drivers have already logged more than 100 billion miles on it, according to Growth Energy.

“UNL88 Day is a great opportunity for our eastern South Dakota customers to gain a deeper understanding of the benefits of UNL88 fuel and also get a great deal, today and every day, while they’re filling up their tank,” Mark Meisner, vice president of marketing at Kwik Trip/Kwik Star said.

UNL88 Day highlights SDCUC and Kwik Star’s shared commitment to increasing usage of ethanol blended fuels. This event is a part of the two organizations’ larger partnership which educates area drivers on the benefits of Unleaded 88. Learn more about UNL88’s benefits at FuelUpSD.com.