How to check your brake fluid

Here is some guidance on how to check your brake fluid:

1. Find out where your brake master cylinder reservoir is located. The brake master cylinder is typically located directly beneath the brake fluid reservoir. If you are not sure of the exact location, then ask somebody who knows this type of vehicle very well.

2. Now it’s time to check the fluid level.

  • On new cars: New cars have a translucent reservoir with a marked "full" line. In this case, you can check the fluid level without removing the cap.

  • On old cars: Old cars, starting from 1980, have a metal fluid reservoir with a top held on by a spring-loaded clamp. Before opening the cap, clean around properly so dirt doesn’t fall in and then pry the clamp away to one side, and then the cap and you will see the "full" line mark.

3. If you see that the brake fluid is low, then add more brake fluid until the “full” mark.

IMPORTANT: If you’ve noticed that your brake fluid is getting low quickly, then it can be that your brake pads are worn out, and it’s time to repair them or to replace them. It’s better to visit your mechanic and let them check the brake pads.

CAUTION: Use the brake fluid that fits your vehicle. When refilling the brake fluid, try not to cross the “full” mark. If you have a dual-chamber reservoir, then fill them both up. For your safety, if your vehicle’s reservoir is low or empty, contact a certified mechanic immediately.

4. Close the cap and the job is done.

WARNING: BRAKE FLUID MAY BE EXTREMELY TOXIC. WASH HANDS THOROUGHLY AFTER HANDLING. DO NOT GET IN EYES. DO NOT SPILL ON PAINT.

DID YOU KNOW?

If your car works correctly, then the brake fluid shouldn’t go down so fast. It can happen only if you have problems with your brakes and there is a leak somewhere. Contact your trusted mechanic to avoid the brake damage. And use the correct type of oil for your vehicle only. Usually, it’s DOT3 and DOT4. If you have a new car, then you can find on a reservoir cap what type of oil is suitable for your vehicle, if not, contact your mechanic for advice.

CAUTION: Again, use only the correct type of brake fluid for your car!

Note: This is a very important guidance regarding the brake fluid. Always consult your mechanic or use a service manual when changing oil or filter in your car. And be always careful when lifting the vehicle. Safety first!

For more info, read: Is My Brake Fluid Low?, Adding Brake Fluid 6-step Guide, Brake Fluid Color Guide.


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