Yamaha Outboard Fuel Stabilizer Conditioner The Yamalube fuel stabilizer and conditioner is designed to treat modern day gasoline, increasing its short shelf life. The longer gasoline sits the less performance it can deliver. Best used with fresh fuel to maintain its potency, staying potent and protecting against degradation oxidation for up to 1 year of storage. Yamalube also helps keep your fuel system clean by preventing varnish gum. The conditioner helps fortify your fuel system with adva