Any marine engine, such as the one powering your beloved PWC, is affected by water, oxygen, light and heat whenever it is in use. All petroleum will be affected by these same four elements. If you are storing your watercraft for an extended period of time, adding fuel stabiliser will keep the ethanol in your tank from separating and going bad. Ethanol absorbs humidity from the air, which can lead to corrosion and breakdowns. Sea-Doo’s fuel stabilisers contain powerful anti-corrosion additives that help protect the components of your fuel system. Protect your PWC and stay out on the water as long as you want!