ValveTect fuel additive can maintain your fuel for up to one year. If you started the season with some Ethanol "enhanced" fuel, used the boat infrequently, then added new fuel, there is still a good portion of original fuel in the tank. Ethanol (added to fuel sold in the US to comply with federal  EPA standards) is known to draw water from the atmosphere and from condensation on the walls of the tank, and also acts like a solvent on plastic parts, hoses and gaskets. Additionally, it's sulfate salts can corrode metals in the fuel system, fuel injectors, carburetors, intake valves, intake ports and combustion chambers.
       

When ethanol bonds to the moisture, it separates from fuel and drops to the bottom of a tank. This is called "phase separation" and it causes two problems. First: Because ethanol boosts fuel octane by about two points, when it drops out, it leaves fuel that is below the recommended octane for your engine, resulting in hard starts, poor acceleration and loss of power. Second: It can actually create a situation where your engine is forced to run on water! (not good). 

 

Use as much of your existing fuel before refueling and plan on filling your tanks for the winter. Using ValvTec fuel from the Cove Fuel Dock or Rex fuel station will maintain the fuel for up to one year, and includes all necessary fuel stabilizers, and anti-separation ingredients. Pre-measured and scientifically mixed, ValveTect is an easy way to protect your engine.