The differential makes turning the wheels of your vehicle possible by delivering power to the front and/or rear axle that turns your wheels. It is part of your vehicle’s drivetrain and the differential works with your transmission to deliver power from the engine to the axle. Using a series of different sized gears and gear ratios, the differential allows the wheel to not only turn, but to also turn at different speeds for improved traction and stability. The differential is filled with differential oil and provides lubrication for the complex sets of bearings, shafts and gears inside the gearbox. The purpose of the fluid is to carry heat away from these components, helping to preserve their life and optimal performance. Over time, high stress and heat causes the fluid to break down and the differential loses protection. This contamination can cause bearing or gear failure and abnormal or premature wear on the gears.
Service your vehicle’s differential based on your owner’s manual recommended intervals for quieter operation, smooth gear shifting and longer component life.