Torco RGO 85w140 Racing Gear Oil Bottle - 1 liter, (Case of 12) is formulated using highly refined petroleum base stocks and select additive systems to improve gear protection and high temperature stability. It has special high adhesion polymers that focus on shear stability, thermal stability and high shock load protection. The RGO carries a higher concentration of extreme pressure additives, anti-oxidation, anti-corrosion and anti-foam to prevent fluid degradation and extend life of all drive components. It is recommended for differentials, transmissions or transfer cases requiring an SAE 80W90, SAE 90 GL-5 or GL-6 rated gear oil. It is highly recommended for high performance or racing applications.