Royco 481ROYCO 482 is a light green rust and corrosion preventative oil commonly used to preserve aircraftinternal combustion engines. The ashless anticorrosion additive package and highly refined petroleum base oils protect the engine by minimizing the effects of humidity and neutralizing the acidic components of engine oil oxidation and combustionby-products.PropertiesSpecificationsROYCO 482 meets all requirements of and is