Can You Use Transmission Fluid for Brake Fluid?

You could have heard somewhere online that transmission fluid is okay for brake fluid and you wonder if it’s truly true.

Transmission fluid is used to keep gears lubricated, while brake fluid is used to keep them from moving. Although they are both hydraulic fluids, they perform in distinct ways.

Can You Use Transmission Fluid for Brake Fluid?

Brake fluid is vitally important in your car. It ensures that you can stop in emergency situations or when needed. Replacing brake fluid regularly is important to make sure that your brakes are always in good working order.

There are many fluids that you might be able to use for brake fluid, but the transmission fluid is not one of them. Transmission fluid does not meet the specifications for brake fluid and should never be used as a substitute.

What are the Differences Between Transmission Fluid and Brake Fluid?

Transmission fluid is the fluid that transmits the power generated by the engine to the wheels of your car. Brake fluid, on the other hand, is a liquid that is used to stop your car in an emergency.

Brake fluid has a higher boiling point than transmission fluids. Transmission fluids are basically made up of oils or hydrocarbons, while brake fluids contain water and alcohol.

Transmission fluid provides lubrication for gears and bearings while brake fluid helps stop your car when you press on your brake pedal.

Brake Fluid – Why not use it for your Automatic Transmission?

The most commonly used fluid for automatic transmissions is ATF (Automatic Transmission Fluid). This type of transmission fluid is not the same as the kind that you would put in your car’s braking system. Brake fluid will corrode and damage the inside of your car’s transmission and is not safe to use in an automatic transmission.

Brakes and transmissions are designed to handle different types of fluid. This means that brake fluid or hydraulic brake fluid cannot be used in place of ATF, which is a type of lubricating oil.

Transmission Fluids vs. Different Types of Automotive Fluids

A vehicle’s transmission fluid is what keeps everything in the transmission running smoothly. Transmission fluids are a vital part of a vehicle’s operation.

Different types of fluids are used in different parts of a car. Engine oil, brake fluid, and transmission fluids are the most common fluids found in a car.

Transmission fluid is usually green or red and can be found near the transmission, differential, and transfer case on most vehicles with an automatic transmission.

What Would Happen After Use Transmission Fluid for Brake Fluid?

After you’ve added the incorrect one, the first thing you’ll notice is smoke coming from the braking system. The transmission fluid mixes will damage the whole braking system. Transmission fluids are mostly petroleum compounds, but braking fluids are not. It has a significant impact on their property.

When heat is applied to fluids, it causes the seals to disintegrate and the moisture to evaporate. The brakes will corrode and pit as a result of the dampness.

When the seals swell, they prevent the brakes from working properly. It is necessary for the braking system to work properly. When you utilize transmission fluids, the brakes might lock up. Because the fluids can expand and do not return to the reservoir, this is the case.

After a short distance, the brake’s route becomes obstructed. Petroleum products are, once again, heavier than braking fluids. That’s why they don’t combine with the pollutant in the system, which is brake fluid. Then the damages were effective right away.


This article will be looking at the difference between transmission fluids and brake fluids. Transmission fluids are typically used in vehicles with manual transmissions, while brake fluids are found in vehicles with automatic or manual brakes.

Brake fluid is a type of hydraulic fluid that helps to create a seal between the brake pads and the rotors, which is necessary for stopping the vehicle.

Transmission fluid, on the other hand, is an oil or lubricant that transmits power from one place to another by acting as a lubricant inside the transmission.

Both types of fluids are essential for your safety on the road; however, they each have their own distinct function.

About Nurul Islam 157 Articles
I am Md Nurul Islam (Jewel), a Professional SEO expert, and a blogger. I am an automotive enthusiast also I started creating this website because I have always loved cars and bikes.