Consumers Co-Op - CENEX
740 Phillips Blvd, Sauk City WI
Ethanol-free octane ratings: 91
GPS coordinates: N 43.27123 W 89.72659 (located from address)
Updated by hlg, September 14, 2015 8:17 CDT
verified 9/13/15
Updated by Sam, April 27, 2010 15:20 CDT
It's 91 octane, confirmed yesterday.
Posted by Sam Hokin, June 24, 2009 17:23 CDT
They advertise ethanol-free out front, but I'm not sure of the octane, didn't fill there. I've filled with 93 at other Cenex stations.