I've been running 93 octane with 10% ethanol in my bikes (see my sig) & adding Sea Foam gas treatment at each fill up. Recently found a station close to home that has ethanol free gas, but only offers 87 octane. I'm told they will be moving to 90 octane ethanol free in the near future. Just wondering if ethanol-free might be the better choice despite being lower octane? Or what about adding octane boost to it? I've heard that straight gas burns cleaner/more efficiently & yields better fuel mileage. Not as hard on rubber & plastics, with less residual buildup too.