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

asked by on

I had caliper ceasing and create brakes overheating on my 2007 motorhome with the workhorse chassis . Would the 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 212° F, the moisture in the fluid boils which creates air bubbles or entrained gases. That air is then trapped within the brake lines and reduces braking power because these gases are compressible while brake fluid itself is not. Severe overheating could degrade the rubber seals in the caliper as well. The solution to your entrained air problem is to simply bleed the brake system. If you would like some professional assistance with this issue, a certified technician, such as one from YourMechanic, can bleed your brakes for you.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. My brakes are overheating; could the brake fluid be contaminated?

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Rear left tire locks up

Good question and sorry about the problem you are having. There are a few things that we need to check. I will go through them in steps. Bleed your brakes. If there is any air in your brake lines,...

Q: How does brake fluid get dirty?

One way that brake fluid becomes contaminated is when moisture is absorbed by the brake fluid through rubber brake lines. This moisture will break down the brake fluid and cause rust in the brake system. Excess moisture in brake fluid...

Q: Womping sound coming from the front of car.

The most common problem with this car making noise when stopping is problems with the brake pads and rotors. I would have a technician come out and inspect the brakes and pull the codes off of the computer to make...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...