VTech GL-1 Gear Oils are straight mineral gear oils intended for mild service in a broad range of automotive, manual transmission and industrial gear and bearing applications calling for API GL-1 performance. Vtech GL-1 Gear Oils are used in gear sets operating under such mild conditions of low unit pressures and minimum sliding velocities, that untreated oil may be used satisfactorily. They may contain oxidation, rust and corrosion inhibitors, anti-foam agents and pour point depressants. GL-1 gear oils do not contain friction modifiers or extreme pressure additives.