Melanie Reiff
Updated on Aug 11, 2022
A mechanic will replace the differential/gear oil if it becomes contaminated with metal particles and debris. You’ll need this service every 30,000 to 50,000 miles to maintain proper lubrication and prevent your gears from overheating and burning.
Regularly checking and replacing the differential oil will prevent low fluid levels and the differential from failing. That’s why the number one rated car insurance app Jerry has found everything you need to know about replacing the differential/gear oil.
The exact cost varies between different Mazda models. For example, newer vehicle models are usually made with more expensive materials, so recent or high-end models will cost more, especially if your service requires a part replacement. Use the table below to estimate the cost for your own vehicle.

What is a differential/gear oil replacement?

The mechanic will check the fluid level, inspect the rear housing for leaks, and top off your car’s differential oil during this service. If necessary they’ll replace the gasket too.
Depending on the car you drive and the auto repair shop you go to the total cost of parts and labor can range between $70 and $150 to replace the differential oil.
You can save money by changing the differential oil yourself. You’ll only have to pay for the oil itself which usually runs between $30 and $80 depending on your vehicle.

How to replace differential/gear oil

Here are the steps a mechanic will usually complete to change the differential oil:
  • Check the fluid level
  • Inspect the differential case for leaks
  • Remove the cover or plug to drain the oil
  • Install a new gasket if necessary
  • Fill with new oil
If you decide to replace the differential oil yourself, consult the vehicle owner’s manual for the correct oil type and fluid levels.

When do I need to replace the differential/gear oil?

The differential fluid should be changed every 30,000 to 50,000 miles to avoid severe damage to the differential caused by metal shavings and debris in old oil. You should also have a mechanic check the differential oil levels during regular maintenance services to ensure the differential is properly lubricated.

How to find cheap car insurance

Adhering to a basic maintenance schedule can prolong the lifespan of your car, but is an expensive part of owning a car. You can cut car ownership costs by shopping for cheap car insurance with Jerry.
Jerry is an insurance comparison app that shops for low prices with over 50 different insurance companies for free. You will get quotes in seconds, can make changes at any time, and if you ever have any questions, agents are just a text away!
Keep in mind that your location is another factor that determines the final cost of repairs. Areas with higher cost of living will usually have more expensive car repair services, especially if there’s less local competition. Check out the table below for an estimate of what Mazda drivers pay in different cities.
Jerry doesn’t just offer fair price repair estimates for Mazda drivers! Our team of writers has collected everything you need to know for every car. Here’s how much the repair costs for some popular cars:
CarTotal Cost EstimateParts CostLabor CostAverage Dealer PriceEstimated Service Duration
1975
$60$0$60$601h
1971
Jeep 
J-3800
$60$0$60$601h
1972
Chevrolet 
K10 Suburban
$60$0$60$601h
1988
Toyota 
Van
$60$0$60$601h
2008
$60$0$60$601h
1965
Mercury 
Comet
$60$0$60$601h
The cost of repairs might vary depending on which Mazda you drive, but there’s an easy way to save money for the services you need! Just download the Jerry app for help lowering your insurance premiums. In less than 45 seconds, Jerry collects all of your information from your existing insurer. Choose from competitive quotes from top insurance companies and Jerry takes care of the rest—securing your new policy and helping you cancel your old one upon request.
With an average annual savings of $887, Jerry can help you free up funds for the repairs your Mazda’s needs.