Ethanol fuel must be plainly labelled to identify it as such by law, there is a standard that enforces this, If stations are selling ethanol blend without labelling at the pump they should be reported. I won't run ethanol blend in anything but I don't have any particular preference for any particular servo. All the fuel here comes from the same bulk tanks and the tankers just fill up and deliver to their particular stations. I think the biggest problem is fuel from servos with low turnover of fuel.