CASEY GENERAL STORE bad gas Cokato Minnesota

August 25, 2015 I got gas in my Toyota Prius and also filled a 5 gal can. Shortly after leaving Caseys, my check engine light came on. I didnt  think much about it till i seen my gas mpg go down to 31 mpg from avg of 49mpg. I filled my lawn mower and pull behind lawn vac, and started mowing and after 5 minutes  the vac shut down and John Deere mower stopped. Then i put the gas in my Cub Cadet to finish mowing and that stopped. I did call Caseys in Cokato and let them know about the problem gas. Of coarse the had not any other reports. After draining out the Casey gas , i put in gas from Phillip 66.  They are all running fine now. For years i have bought gas at Caseys and never had a problem.  If you have a check engine light come on , it might just be a bad batch of gas.  Im done with Caseys , even the home office blew me off.  I told them i would keep the old gas  for them to test. They just dont care.