What is differential fluid?

When you make a turn in your car, the wheels on the outside have to travel further than the wheels on the inside. This is because they travel a further distance. The differential (also known as a diff) is what allows two wheels to operate independently at different speeds, preventing skidding and other problems from occurring as you turn.

Learn more on how the diff works >

Differential fluid, also known as gear oil, is an essential component in the operation of your vehicle’s differential. The differential is responsible for distributing power to the wheels, and it plays a crucial role in the overall performance and longevity of your vehicle. However, like all fluid in your car, differential fluid has a finite lifespan and needs to be replaced periodically. That’s why it’s important to have regular differential fluid replacements, to ensure that your vehicle is running at its best.

A leaking differential should be serviced as soon as possible to prevent damage from occurring.

When should the differential fluid be replaced?

Differential fluid replacement is a routine maintenance service that should be performed every 30,000 to 50,000 miles (48,000 km – 80,000 km), or as recommended by the vehicle’s manufacturer. Over time, the fluid can become contaminated with metal particles and can lose its lubricating properties. This can lead to increased wear and tear on the differential, resulting in costly repairs.


Symptoms of differential (diff) fluid in need of replacement:

  • Loud whining noises – If the differential fluid is not lubricating the gears properly, you may likely hear a whining noise, while accelerating or turning. These noises may become worse over time as the car differential parts wear out or diff bearings become noisy.
  • Visible leaks – When the differential leaks, you may notice small leaks of oil appearing around the back of your car.
  • Increased wear – Old differential fluid will cause the various parts inside the diff to wear at an accelerated rate. This can lead to the differential eventually failing, causing loud vibrations and increased tyre wear.


Differential (diff) Fluid Replacement Service in Hamilton

Is your car in need of a differential fluid replacement? If so, we can help! At Grimmer Motors, our team of skilled mechanics can remove the old fluid from your car’s differential and replace it with new high-quality oil. This will allow for improved functionality with less friction and reduced wear.

When you bring your vehicle in for a differential fluid replacement, our team of experts will drain the old fluid and replace it with new, high-quality gear oil. We’ll also inspect the differential for any signs of wear or damage, letting you know if anything looks abnormal or broken.

Don’t neglect your differential fluid replacement service. Bring your vehicle to us and let our team of experts ensure that your differential is running at its best. Contact us today to schedule your differential fluid replacement service and give your vehicle the care and attention it deserves. For differential oil replacement in Hamilton, contact Grimmer Motors today!


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