[dippasan]

Two schools of thought on this since the introduction of ethanol in fuels. A full tank means the potential for more ethanol to absorb moisture and potentially a large amount of fuel that can go bad and to have to pump out or dispose of in the spring. ($$$) The other opinion is that an empty tank means condensation can form on the walls of the tank and contaminate the gas. I now just treat it at whatever level it's at with Star Tron enzyme treatment and Sta-bil. I have lots of motorized seasonal "things" (motorcycles, snowmobiles etc) and I have found that the Star Tron enzyme treatment is a must for storing fuel.