Numerous convenience stores across the region suspended gasoline sales this week after it was discovered that gas with higher-than-intended levels of ethanol had been received. Officials at the Magellan distribution facility on Highway 68 realized the mistake about 3 days after shipping the fuel. Kwik Trip stores in Mankato, New Ulm, St. Peter and Owatonna were affected, as were some other stores, but they have since suspended the sale of the gas in question. The compromised fuel was believed to have been first delivered on Friday and the problem was detected on Monday. Car care experts say that if you used the high-ethanol fuel in your vehicle, you can either have the gas drained and fill up with fresh gasoline or just constantly top off the bad gas with good gas to dilute the mix.