It's important to know the maintenance requirements from the manufacturer because sometimes, not following it can cause a headache down the road. We know which vehicles need maintenance and when they need it. Car differentials are often overlooked even when it comes to something as simple as changing the fluid.
Their purpose is to transfer power from the transmission to the wheels. Differential carriers are in rear wheel drive vehicles. The most common reasons for failure is due to lack of fluid changing. If the fluid isn't changed approximately 50,000 miles, you may end up needing to replace the differential. This is another reason to come to us. We will change the fluid for $50-$90 so you won't need to replace the differential for $4,000.
Front wheel drive vehicles have a transaxle which is built into the transmission. There is no way to replace the transaxle without replacing the transmission.