What is brake fluid and what you should know about it?

The correct operation of the brakes is one of the most important issues when checking your vehicle. Not only will it help you drive better, but it can save lives and prevent destructive accidents. Due to the above, it is essential to know what the brake fluid is, what properties it has, what it is for and when it is necessary to change it.

Next, what you need to know about this element is explained and questions are answered as to what happens if brake fluid is missing, as well as what is to bleed brakes.

What is brake fluid?

It is a hydraulic fluid responsible for transmitting the force made on the pedal to the brake cylinders, located on the wheels of the car. Since braking is a process that generates a lot of heat, this fluid must have a very high boiling point and there are different types ranging from 205 ° C to 230 ° C. In addition, it must be frozen at very low temperatures. Other important qualities include viscosity, lubrication and resistance to rust.

Types of brake fluid:

  • DOT 3: recommended for conventional brakes, it has a glycol base and its boiling point is 205 ° C.
  • DOT 4: shares the same base of DOT 3 but improves its boiling point at 230 ° C. It is recommended for ABS and conventional brakes.
  • DOT 5: in this type of liquid a silicone base is used and should not be mixed with the previous ones since they are incompatible. Its boiling point is 260 ° C.
  • DOT 5.1: here it returns to the glycol base, but achieves a boiling point of 270 ° C. It is used in vehicles with modern brake systems that have better leak prevention, since its low viscosity can generate this problem in the circuit.

What happens if brake fluid is missing?

It usually should not be refilled, so if it is below its level it could be due to a defect in the brakes. One of the main reasons for the decrease of this fluid is the wear of pads or shoes, which forces the wheel cylinders to extend to compensate. It can also happen due to a leak which would result in a decrease in hydraulic pressure, which results in poor brakes.

What is bleed brakes?

This process seeks to expel bubbles that may have been created inside the brake fluid, which being compressible gas generate great hydraulic pressure in the system. The above is achieved by injecting bubble-free brake fluid with pressure by various methods. The essential thing is to make sure that there are no bubbles inside to optimize the braking of the vehicle.

How often to change the brake fluid?

The wateriness of the brakes is hygroscopic which means that it attracts water molecules and this can damage the brakes, or encourage corrosion of the ducts. For this reason it is advisable to change the product every 2 years and it can be risky to wait more than 4 years to make the change.

How to change the brake fluid reservoir?

Due to various eventualities, the brake reservoir may contain cracks that may affect the correct supply of fluid. When asking how to change the brake fluid reservoir without causing further damage, you should consider leaving the procedure to a professional service that offers the guarantee of performing a safe and reliable job. If you want to buy engine or brake oil, must checkout Pk Trims.

The brakes are an indispensable element for safe driving. For this reason, be sure to periodically check its status and the components that allow its operation.

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