This is a question to those of you who use non ethanol fuel. If you put it in a 1 or 2 gallon can, you are using mainly ethanol fuel. Think about what you are doing? You pull up to the pump, grab the hose, punch the button for non ethanol fuel and fill the can. Think about this, what fuel did the last customer buy, probably ethanol? You just pump all the ethanol fuel in the hose and line all the way back to the transfer connection into your can. What did you pay for? First pump a gallon or two into your vehicle, then fill your can. Which is better? All I'll say is that since we started recommending to our customers to use ethanol free fuel and drain the system when ever the unit will sit for more than 30 days, our fuel related problems have dropped by over 75% to those following our recommendation.