To answer your question about our premium gas being non-ethanol, I'm not sure. I've never ask. It might be, becausw our supplier knows what we use it for. It is all off road use and goes into 4 wheelers, water pumps, seed tender wagon engines, air compressors, chain saws, welders, generators - basically all types of small engines. So he may very well decided to supply non-ethanol. If he even has it. It is a 300 gallon tank and we might fill it if we will be using a lot of gas in season or might just put a hundred gallons if late in the season. But the gas could get used up in a month or two or it might be in there five or six months. I know I ask my foreman (the guy that calls supplier when we need gas) to see if he would put conditioner in it but never heard back if he does or not. We have not had a problem that I know of. Up till a couple years ago we just carried 1 to 5 gallon cans to whatever gas station and filled a bunch of them at once. That was a hassle. So I am sure we were getting ethanol at least part of the time then. In everything we run there would be only two small engines that I could pin their demise on ethanol. I don't think it was the problem, but if I was anti ethanol that is what I would blame it on. Other than those two that I am unsure of the problem (and expediency or economics just had us replace the engine), we have not had any problem and started using ethanol laced gas as soon as we could buy it. I think it keeps the fuel systems cleaner than straight gas.