Synthetic 75W-140 Limited Slip Gear Oil utilizes next generation synthetic oil technology to provide consistent limited slip differential performance. Popular for cars and light trucks such as the Ford Mustang, Ford F-150, Dodge Ram and others, it is engineered to provide the highest degree of protection and improvement of differential efficiency for improved fuel mileage, longer drain intervals, and less wear and tear. It provides superior lubrication under extreme conditions and maintains a relatively constant viscosity with temperature variations. Exceeds the performance requirements of API GL-5. Recommended for limited slip differential applications. Viscosity typical of 75W-140.