It is very high grade, which means low water content. If there is too much water in the ethanol, it will separate out from the gasoline while sitting in the underground storage tanks at gas stations. Those E85 storage tanks have to be set up with systems to keep water out, probably some kind of dryer system on the incoming air into the tanks. I've been experimenting with this separation, and I've been able to get the fuel to take about 10% water and not separate out, as long as I mixed it extremely well to begin with. If I just dropped the water in and did not stir it, it started a separation process. I can get about 2% water to mix and blend to a clear state with vigorous stirring. If I add 50% water without stirring, it separates out fast. It's easy to see the gasoline, it's the yellow layer above the cloudy layer. The clouding in the ethanol/water goes away after some time and clarifies. I am definitely going to try some more experiments mixing E85 with glow fuel to try to run on glow plugs. I'll start with 2:1 E85 to glow fuel ratio and aim for 5% nitro, 15% oil by adding more oil.