Skip the auto shop - Our mechanics make house calls
  1. Home
  2. Articles
  3. How Long Does a Differential / Gear Oil Last?

How Long Does a Differential / Gear Oil Last?

The differential is normally located at the rear of your vehicle and underneath the car. It is essential that it stays lubricated with differential or gear oil for it to work properly and your vehicle to go smoothly down the road. The oil needs to be changed every 30,000 to 50,000 miles, unless your owner’s manual states otherwise.

The differential is a part in your vehicle that compensates for the difference the inner wheel and the outer wheels travel when you turn a corner. If you have a rear-wheel drive vehicle, your differential will be in the back with its own lubrication and housing. It uses a dark, thick oil that is heavier than 80 weight. Front-wheel drive vehicles have the differential integrated into the transmission housing and share fluid. Check your owner’s manual to ensure you have the correct type of fluid/oil for your vehicle.

The differential/gear oil lubricates the ring and pinion gears that provide power from the driveshaft to the wheel axles. Keeping the oil in your differential clean and changing it on a regular basis is just as important as your engine’s oil, yet it is often overlooked or forgotten about.

Over time, if the oil goes bad or you have a leak in your differential, metal will grind on metal and will wear down the surfaces. This creates high amounts of heat from friction, which will weaken the gears and lead to failure, overheating, or burning. A professional mechanic will replace and/or change your differential/gear oil to ensure your vehicle keeps operating like it is supposed to.

Since your differential/gear oil can go bad over time and needs to be replaced, you should be aware of the symptoms that indicate the oil needs to be changed.

Signs your differential/gear oil needs to be changed and/or replaced include:

  • The oil is contaminated with substances or metal particles
  • Grinding noise as you turn corners
  • Humming noises because the gears are grinding against each other due to low lubricant
  • Vibrations while you are driving down the road

The differential/gear oil is extremely important to keeping your vehicle run smoothly so this part should be maintained.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

More related articles

How Long Does a Fuel Filler Neck Last?
Getting gas from the pump to your gas tank is the only way to keep a car going. The fuel filler neck is a metal tube that is welded to the...
How Long Does a Vacuum Brake Booster Check Valve Last?
The braking system on your car requires a lot of pressure. The vacuum booster is one of the main sources of this pressure. This booster will take the pressure that...
How to Buy Fuel Treatments
Adding a fuel additive to your gas tank when you fill up is one way to clean vital engine parts of deposits, improve the performance of your engine,...

Related questions

Q: Grinding noise when in Park and Neutral.

The noise is either coming from the clutches slipping inside the transmission or a loose exhaust shield that is rattling. Lift up the vehicle and put it on jack stands. Then go under the vehicle and feel around for anything...

Q: Repeated Fuel Injector Seal Failure

O-rings on fuel injectors have to be liberally lubricated with engine oil prior to installation. Installation is typically made with a twisting motion as you push the injector into the bore on the fuel rail. Be sure the aluminum surface...

Q: Brakes feel like they are slipping

Usually the symptom you're describing is related to brake pads that are worn out and are grinding on the rotor. With 31,000 miles on your Challenger, this may be the source of your problem as front OEM brake pads tend...