Skip the auto shop - Our mechanics make house calls
  1. Home
  2. Articles
  3. How to Buy Good Quality Clutch Fluid

How to Buy Good Quality Clutch Fluid

Quality Clutch Fluid

Cars with a manual transmission require fluid to change the pressure between the master cylinder (the clutch fluid reservoir) and the slave cylinder (the unit at the other end of the mechanism which facilitates engagement of the clutch). The fluid flows from the master to the slave when the clutch pedal is depressed, allowing you to change gears while driving.

There’s a secret to clutch fluid – whether in a conventional transmission or one with a hydraulic clutch – it doesn’t exist. Brake fluid is actually what’s used in these systems. It may be labeled under the name “clutch fluid” but you can be sure, as there’s no such thing, that the liquid inside is brake fluid.

Gradual loss of brake fluid in the clutch system is expected – but it shouldn’t need anything more than to be topped off on rare occasion. If you notice a sudden drop in fluid in the master cylinder you may have a leak and the components should be professionally inspected.

How to tell if your clutch fluid is low:

  • Slipping gears – low fluid prevents the clutch from engaging, which stops you from effectively changing gears

  • Unpredictable vehicle motion – lack of proper fluid levels can cause the car to buck and lurch

  • Vibration or grinding – either of these events during shifting can indicate low clutch fluid

Tips to make sure you’re getting good quality clutch fluid:

  • Choose a well-respected brand of DOT-4 brake fluid.

  • Don’t be fooled by “clutch fluid” labels on higher priced bottles. It’s the exact same thing as what’s in the brake fluid bottle.

  • Do not use DOT-5 brake fluid. DOT-3 is acceptable but DOT-5 contain silicone which cannot mix with other brake fluids and could cause damage to your transmission.

YourMechanic supplies top-quality clutch fluid to our certified mobile technicians. We can also install clutch fluid that you've purchased. Click here to get a quote and more information on clutch fluid replacement.

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

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.


More related articles

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,...
Insurance Requirements for Car Registration in Kentucky
The Kentucky Transportation Cabinet requires that all drivers in Kentucky carry liability automotive insurance, or “financial responsibility” in order to operate a vehicle legally and maintain vehicle...
How to Transfer a Car Title in Idaho
In order to prove ownership of a car, you must have the title. However, when a car is sold, given away or inherited, the title needs...

Related questions

Q: My brakes are overheating; could the brake fluid be contaminated?

If your brake fluid boiled during this or any past overheating incidents, then yes, the fluid is likely contaminated with air and other gases. Brake fluid is hygroscopic, and a consequence of that is when the fluid gets hotter than...

Q: AC compressor clutch disengages after a half hour, then won't come on again until the next day.

The low pressure cut off switch is on or near the accumulator. The high pressure or compressor cut out is on the back of the compressor or in the high pressure line near the condenser line connection. You may want...

Q: The clutch pedal doesn't spring back as quickly when it is cold outside.

Hi there. It is possible that the brake fluid may be freezing. When brake fluid gets old, it collects too much moisture causing water droplets to form in the fluid. This will gel up the fluid and cause it to...