Does the Differential on an Ordinary Car Need Regular Maint?
Yes, they do. It is not as frequent as the engine or automatic transmission fluid; but periodically, you should have a mechanic (or you can do it yourself) check the fluid level, and per the maintenance schedule, drain and refill the differential oil. Locking differentials (e.g. "posi-traction") take different oil than regular differentials, so make sure you use the right kind for your car. The wrong kind can ruin the rear-end. On most rear drive cars and trucks, the oil is checked by removing the fill plug and sticking your finger in to see if the fluid is up to the fill hole.
Yes, they do. It is not as frequent as the engine or automatic transmission fluid; but periodically, you should have a mechanic (or you can do it yourself) check the fluid level, and per the maintenance schedule, drain and refill the differential oil. Locking differentials (e.g. "posi-traction") take different oil than regular differentials, so make sure you use the right kind for your car. The wrong kind can ruin the rear-end. On most rear drive cars and trucks, the oil is checked by removing the fill plug and sticking your finger in to see if the fluid is up to the fill hole.