Genuine Sta-Bil formula eliminates the need to drain fuel for engines stored longer than 60 days. Prevents rust, corrosion and fuel deposits. Prevents rust, freezing or gelling of fuel. Keeps jets and float bowls free of gummy residues. Developed to combat problems from modern fuels containing ethanol. Improved formulation with added corrosion inhibitors. Pro Honda P/N: 08732-0800.