I've got 5,214 miles on my 18' Max. Per Tim Nash it's okay to run ethenol gas in the Vmax, even after his 'flash', but you do NOT want to keep the same fuel in the tank for more than a month without adding something like Sta-Bil gas treatment to it, and then it's still not the perfect scenario. If you store your bike for the winter, you definitely want to have your tank as full as possible of NON-Ethenol fuel. Luckily, there are plenty of stations around here that carry Non-Ethenol including the holy grail: 93 Octane. That's all I run in my bike. Gas mileage.... hahahahaha.... good one.... One has to remember that my bike is built up pretty well, and under normal riding conditons I get 22/23 mpg. On an out of town cruise with no 'stop and go', I might get 24/25. If I'm riding 'sportingly' or aggressive it has dropped down to as low as 17 mpg. Gen2 VMaxes and fuel economy are an oxymoron. Ethenol has water in it. Get a clear mason's jar or something with a lid that tightens, clear so you can see through to the liquid, and fill it 3/4s full with gas that contains ethanol. Give it 2 or 3 weeks and check it. You will CLEARLY see where the water has separated itself from the gas.... that will freeze on it's own with no additive added... but still I don't like the idea of water in my gas. Tim also said that ethanol will make it run a bit leaner which can be both good and bad. Good: might gain an extra horsepower or two. Bad: If your bike is already running a bit on the lean side for power, it is possible you might burn an exhaust valve... happened to a friend of mine who moved away and could only purchase ethanol gas. NEVER run anything more than 10% ethanol for any reason. Remember, just because these newer engines were built to run on ethanol fuel, does NOT mean it's a good idea. They only did that to pass Govt. Regulations....