Mercury Monarch Differential/Gear Oil Replacement at your home or office.

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Differential/Gear Oil Replacement Service

How much does a Differential/Gear Oil Replacement cost?

On average, the cost for a Mercury Monarch Differential/Gear Oil Replacement is $122 with $27 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
1978 Mercury MonarchL6-4.1LService typeDifferential / Gear Oil - Rear ReplacementEstimate$168.75Shop/Dealer Price$192.19 - $240.01
1975 Mercury MonarchL6-4.1LService typeDifferential / Gear Oil - Front ReplacementEstimate$148.75Shop/Dealer Price$172.21 - $220.04
1979 Mercury MonarchV8-5.0LService typeDifferential / Gear Oil - Rear ReplacementEstimate$148.75Shop/Dealer Price$172.21 - $220.04
1976 Mercury MonarchL6-4.1LService typeDifferential / Gear Oil - Front ReplacementEstimate$148.75Shop/Dealer Price$172.19 - $220.00
1976 Mercury MonarchV8-5.0LService typeDifferential / Gear Oil - Front ReplacementEstimate$148.75Shop/Dealer Price$172.22 - $220.07
1975 Mercury MonarchV8-5.0LService typeDifferential / Gear Oil - Front ReplacementEstimate$148.75Shop/Dealer Price$172.21 - $220.04
1975 Mercury MonarchL6-4.1LService typeDifferential / Gear Oil - Rear ReplacementEstimate$153.75Shop/Dealer Price$177.07 - $224.80
1978 Mercury MonarchV8-5.0LService typeDifferential / Gear Oil - Front ReplacementEstimate$153.75Shop/Dealer Price$177.44 - $225.46
Show example Mercury Monarch Differential/Gear Oil Replacement prices

What is the Differential/Gear Oil all about?

Differential oil is a type of oil. Cars have a gearbox connecting the two axles. This gearbox is responsible for the conversion of engine power and its transmission to the wheels, allowing them to turn at varying speeds. This part of the car is called the differential, and lubrication is needed for it to function properly. Differential fluid, also called differential oil, provides the lubrication and cooling of the car’s differential. The fluid is there to protect the gears’ metal surfaces from friction, and to prevent overheating and burning.

Keep in mind:

  • Some vehicles have a front differential and others have a rear differential.
  • Some vehicles use a synthetic gear oil.

How it's done:

  • Check fluid level.
  • Inspect the rear housing for leaks.
  • Remove the cover (if the differential does not have a drain plug).
  • Install new gasket if needed.
  • Fill with new fluid.

Our recommendation:

Differential oil should be changed every 30,000 to 50,000 miles. You should aim to have the gear oil changed every 30,000 miles, but it’s a good idea to have a mechanic check the differential oil during regular maintenance services.

What common symptoms indicate you may need to replace the Differential/Gear Oil?

Gear oil is contaminated with metal particles or other substances.

How important is this service?

The differential is responsible for transferring the power from the engine to the transmission and the wheels, and for controlling how much power goes to each wheel. Like many aspects of your vehicle, the differential requires oil to act as lubrication. Differential oil allows the differential to move smoothly and consistently, which allows the vehicle to continue sending power to the wheels. If the differential oil is old, it may be contaminated with debris and metal shavings. This contamination will come into constant contact with the differential, which can cause severe long term damage to the differential.

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Matthew

33 years of experience
1210 reviews
Matthew
33 years of experience
Mercury Mariner L4-2.3L Hybrid - Differential / Gear Oil Replacement (Rear) - Hampton, Virginia
Excellent service.

Stacy

24 years of experience
366 reviews
Stacy
24 years of experience
Mercury Grand Marquis V8-4.6L - Car is not starting - Atlanta, Georgia
Stacy was very professional and kind and answered all of my questions

Richard

11 years of experience
450 reviews
Richard
11 years of experience
Mercury Mountaineer V8-5.0L - Oil Change - Washington, District of Columbia
Richard was great! He was early for the apt and finished fast! He walked through all the items where my car needed service in the long run and told me what to look out for in the immediate future. I highly recommend him, he was professional, informative and efficient!

Vlad

14 years of experience
79 reviews
Vlad
14 years of experience
Mercury Milan L4-2.3L - Door Mirror Replacement (Driver Side) - Des Plaines, Illinois
Vlad was amazing! Couldn’t ask for a better mechanic. He would go out his way to help me understand other issues in the car.

Excellent Rating

(1,380)

Rating Summary
1,295
49
9
6
21
1,295
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9
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21
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