Shell Spirax S2 A is a dedicated, high-quality axle oil to protect heavily loaded differentials and gear sets. Longer Component Life & lower maintenance costs due to wear & corrosion protection. Longer oil life and Lesser operating costs due to good oxidation stability. Specifications: Meets requirements of API GL-5. Best suited for: use in Rear Axles and Live Front Axles of passenger cars, light and heavy duty trucks and commercial vehicles. Applications: Automotive axle units, including automotive transmissions & differentials Gear sets in stationary and ancillary equipment Hypoid gear axles.