Q: Can up use gear oil in place of brake fluid

asked by on

Instead of brake fluid a bought a truck with gear oil is it ok to leave it of replace it

My car has 56000 miles.
My car has an automatic transmission.

The brake system has rubber seals in it which are not compatible with mineral based oils of any kind. Introduction of these oils in to the master cylinder will cause the brake system seals to swell thus preventing normal operation of the brake system. DOT 3 or 4 glycol-based brake fluid is the only fluid that you can safely use in your brake system. If you desire that your brake system be flushed of contaminants, and checked for safe operation, please request a brake fluid flush and YourMechanic will dispatch a certified mechanic right to your location to get that taken care of for you. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

Was this answer helpful?
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. Can up use gear oil in place of brake fluid

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: Q: Clicking noise

Depending on how the click noise sounds, it may be a normal engine noise, or it could signify a problem. The green fluid you are seeing is most likely coolant. The leak will need to be found and repaired. I...

Q: ENGINE RACING PROBLEM

Hi there. I'm actually very glad you asked this question. First and foremost, anytime an inquiry like yours comes in, we look at the common symptoms and attempt to provide a few broad scope systems or components that could be...

Q: Car hit by lightning and won't start.

You will need to have the vehicle towed to a dealer. I have seen many vehicles like this and in most cases, if not all, the computers in the vehicle get zapped and fried. I would recommend contacting your insurance...

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...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.