Do you need to change the brake fluid for 4 years? Is it okay if you don’t change the brake fluid for 8 years?

Generally speaking,Brake FluidThe replacement cycle is 2 years or 40,000 kilometers. However, many car owners have reported that even if the deadline is exceeded, it seems that there is no problem if the brake fluid is not replaced. Doesn't the brake fluid need to be replaced?

In fact, if you want to know whether the brake fluid needs to be replaced, a more accurate method is to check the water content of the brake fluid. This requires the use of professional tools-brake fluid water content tester, as long as the tester is directly inserted into the filling port of the brake fluid, if the measured water content exceeds 5%, the brake fluid must be replaced.

Why is there moisture in brake fluid?

Because the brake system is not a completely closed system, air molecules will enter the brake fluid every time the brake is operated. Over time, the water content of the brake fluid will naturally be high. This is why some car owners will feel that after a period of time, the texture of the brakes has become significantly softer, and even feel that the car can no longer stop.

Two years or 40,000 kilometers is just a reference replacement cycle. Every car owner can replace it according to his own situation. The following is the operation process of replacing the brake oil:

1. Turn off the vehicle and turn it onBrake fluidUse a syringe to draw out all the brake fluid in the lid of the pot until it reaches the bottom of the pot.

2. Pour the new brake fluid into the fuel tank (1-2L). As for how many liters to fill, it depends on the fuel tank capacity.

3. Use a lift to raise the bottom of the car. Of course, we can also use a jack, but the operation is not so convenient.

4. Locate the oil drain screw of the brake cylinder and remove the dust cap on the oil drain button.

5. Use a wrench to loosen the oil drain screw, put the rubber tube on it, and connect the other end to the oil drain bottle.

6. At this time, you can start to step on the brakes. Pay attention to the color of the brake fluid in the rubber tube. If the color is still relatively dark, it proves that the old brake fluid has not been drained. If the color is lighter, it means that the brake fluid has been replaced.

7. Stop stepping on the brakes and install the screws and dust caps back. Finally, observe the position of the brake fluid level. If it is lower than the lowest scale line, you need to replenish the brake fluid.