How often should the brake fluid be changed, and how often should the brake fluid be changed?

For the brake fluid replacement period of the vehicle, it is generally recommended to change it after driving about 40,000 kilometers.

Brake fluid, also known as automobile brake fluid, was used in early automobiles to use drum brakes for mechanical braking. With the development of hydraulic technology, safe and reliable hydraulic brake systems are widely used in automobiles. Brake oil in the car brake system plays a transmission role, we step on the brake pedal with our feet, through the assistance of the vacuum booster, push the brake master cylinder, the brake master cylinder pushes the brake oil, the power under the feet through the brake oil to the brake cylinder to which the four wheels belong, the brake cylinder pushes the brake pads, and the brake pads squeeze the brake disc to form a braking force.

If the brake fluid is not changed in time, it will cause the brake fluid to be turbid, the boiling point will drop, and the effect will deteriorate, resulting in brake failure! Because the brake fluid system will always be worn, and the low-end brake fluid impurities will lead to the brake pump accelerated wear and brake system oil blockage, expired brake oil brake effect is not ideal, just because the owner has been adapting to his vehicle for a long time, so it is not noticed. In order to drive safely, it is recommended to replace it immediately.

Now basically in the maintenance manual of every vehicle, you will be told that the brake fluid has a number of kilometers to change, basically at 40,000 kilometers or should be replaced in two years.

The brake fluid is generally replaced every two years (about 40,000 kilometers), and the steering power oil can be changed after 30,000-40,000 kilometers.

Brake fluid: Generally speaking, the car brake fluid needs to be replaced every two years, and the brake fluid will be worn to varying degrees after being used for a long time, so it is better to replace the car brake fluid.

Power Steering Oil:

Generally, automobile manufacturers do not strictly regulate the replacement interval of steering power oil. Most car maintenance and repair shops will refer to other service companies in the same industry and learn from each other's strengths. There are also more standardized enterprises will refer to the car maintenance requirements of foreign automobile companies, and make more reasonable provisions in combination with the current road conditions, air quality and technical level of users in China.

It is recommended that in order to prevent the steering power oil from being too dirty or deteriorating, the power steering oil should be replaced once every 2 years or 30,000 kilometers.

How to change the brake fluid of the car.

1. First put the car on the flat ground, turn off the engine and pull the handbrake.

2. Remove the right rear wheel with jack support (refer to how to replace the spare tire by yourself), find the oil drain port of the sub-pump, and cover the prepared 40 cm long rubber pipe nozzle to the oil drain port of the sub-pump, so as not to pollute the ground or car body when the oil flows out. Place the other end of the nozzle in a jar.

3. Use a small open-end wrench to pull the outer six sides at the bottom of the oil drain port of the sub-cylinder, at this time let another person get on the car and step on the brake pedal, and pull the small wrench counterclockwise (this is the action of loosening the oil drain port of the sub-pump), at this time the waste oil begins to flow into the jar, and when the flow rate is significantly weakened, the wrench is pulled back clockwise (this is the action of tightening the oil drain port of the sub-cylinder), and then shout "loose", and the person in the driving position releases the brake pedal.

4. Unscrew the oil drain port of the sub-pump again, and then shout "step", the person in the driver's position steps the brake pedal again, and after repeating 4 times, the driver gets out of the car and fills the brake oil reservoir with new brake oil. Top up.

5. Return to the driver's position and continue the previous operation until the discharged waste oil becomes clear, which proves that the new oil has been ejected.

6. Finally, after pulling back the wrench clockwise, and then shouting "loose", the driver relaxes the brake pedal. Unplug the rubber pipe, wipe the oil drain port of the sub-pump with a soft cloth, and then let the driver press the brake pedal several times to observe whether there is oil seeping out, so as to confirm that the oil drain port of the sub-pump has been tightened.

7. Install back to the right rear wheel, and complete the oil discharge step of a wheel sub-pump at this time. And so on, and release the waste oil from the other three wheel sub-pumps.

8. Finally, add the new brake fluid between the upper and lower limit scale marks, preferably close to the upper limit. Note that the brake fluid is corrosive to the paint and **, and should be removed in time if it hits it. Brake fluid is hygroscopic, so be sure to tighten the cap after adding brake fluid to prevent moisture from being sucked in the air.

9. Step on the brakes a few more times on the spot, feel not soft, observe that there is no new oil stain on the ground, conduct a road test, and check the oil level of the brake oil after each use of the car in the following week, and determine the success of the oil change operation if there is no change. If there is a decrease, it is important to check whether the oil drain port of each wheel cylinder is tightened.

Brake fluid is generally changed every 2 years or every 40,000 kilometers. However, this replacement cycle time should only be used as a reference to determine whether the brake fluid must be replaced and the moisture content of the brake fluid needs to be checked. When the test results exceed 3%, it will prompt you to change the brake fluid.

The normal use time of brake fluid is 2 years or 40,000 kilometers, but it depends on the use of the vehicle and the driving environment.

Brake fluid is highly absorbent, so it will form intermittent bubbles in the pipeline after a long period of use. These bubbles are the main culprit of invalid trips, which is why car owners sometimes don't respond when they brake down. Brake fluid needs to be changed in time in the following situations:

1. There is a problem with the quality of the brake fluid, and the oil can be seen from the brake oil tank turning black and dirty.

2. When the owner brakes continuously or urgently, the brake light of the dashboard flashes intermittently, and the vehicle disappears after driving for a period of time.

3. When braking at medium and high speeds, the braking distance becomes significantly longer. If it is not the cause of wear and tear of the brake pads, it is most likely a problem with the brake fluid.

4. The braking foot feeling is abnormal, and there is softness and weakness. In severe cases, there is still not much resistance feedback when the brake pedal is pressed all the way. The soft foot feeling can basically be concluded to be a problem with the brake fluid.

5. Leaking brake fluid. In this case, it is necessary not only to change the brake fluid, but also to repair the damaged oil circuit or loose joints. This situation is very serious, and I don't feel much driving at first. As the fluid drips, the brake performance deteriorates further and further, leading to complete failure.

Generally, the maintenance cycle of brake fluid is based on time, and the replacement cycle is two years, and some manufacturers stipulate four thousand kilometers in two years, whichever comes first. In essence, whether the brake fluid is replaced or not depends mainly on the water content in the brake fluid, and it is best to regularly use a brake fluid tester to measure the moisture content in the brake fluid to decide whether it needs to be replaced.

Therefore, the brake fluid also needs to be replaced, under normal circumstances, it needs to be replaced once every two years, or the total distance reaches 40,000 kilometers, but if it is a medium and large car that often steps on the brakes or has a large loss of the braking system, the brake fluid needs to be changed more frequently. ”

Change the brake fluid every two years, because after the brake fluid is used for a long time, the leather bowl and piston in the brake pump will wear out, causing the brake fluid to be turbid, so it is best to replace it.

How often should the brake fluid be replaced? Brake fluid is also commonly known as brake fluid, sometimes used for less than a year of the car, when the vehicle is maintained, the 4S shop will recommend replacing the brake fluid, and some car owners do not think of replacing the brake fluid for a few years. In fact, neither approach is right.

The vehicle brake fluid should be replaced in accordance with the maintenance interval of the instruction manual. Under normal circumstances, the maintenance interval of vehicle brake fluid is about two years or 2-30,000 kilometers to replace. Because the brake fluid has strong water absorption, if it is not replaced when it expires, it will cause corrosion to the brake piston, and in serious cases, it will weaken the cracking power or even fail, and the boiling point of the brake fluid will be reduced after the brake hidden source is absorbed, so that the brake pressure is insufficient, which will affect the braking effect of the vehicle.

When the mileage of the general vehicle exceeds 60,000 kilometers, the brake fluid can be replaced. Generally speaking, brake fluid is changed because the brake fluid has deteriorated or has sediment. The main reason why the brake fluid deteriorates is because the brake fluid is doped with water, resulting in the water content of the brake fluid exceeding the standard, and the brake fluid must be replaced at this time.

Why should brake fluid be changed regularly?

Because the brake fluid is used for a long time, the leather bowl and piston in the brake pump will be worn to varying degrees, which will cause the brake fluid to become turbid and weaken the braking effect.

There is also because the brake fluid has strong water absorption, for a long time, the brake fluid will cause deep corrosion to the brake piston, and in serious cases, the braking force will be greatly weakened, or even fail, and the brake fluid will also cause the boiling point of the brake fluid to decrease after absorbing water, resulting in insufficient pressure of the brake, affecting the braking effect.

Can the brake fluid change interval be long or short?

It is indeed the case, although the two-year cycle is suitable for most vehicles, it is not absolute, and some vehicles have a short requirement for brake fluid replacement time when they leave the factory, such as medium and large cars, performance cars and other models that need more mandatory power.

If you drive in the city for a long time and rarely drive in the suburbs and highways, the brake fluid replacement cycle will be shorter than others, because driving in the city often stops and goes, and the place where the brake is used is much more than in the suburbs and highways, so that the brake fluid will be lost faster. If you often drive on the road or in the suburbs, it's the opposite.

Why do some people never change the brake fluid, the brakes are just as good?

First of all, it is important to note that none of the braking systems in any car so far can be lifeless without changing the brake fluid.

Similarly, there is no brake fluid on the market that can be said to be life-long without changing.

In other words, those car owners who have not changed the brake fluid for many years and have not had problems with the car are just fatal.

There are also car owners who often run high-speed and suburban areas, because they step on the brakes significantly less often than urban driving, so their brake fluid replacement cycle can be relatively long, but it is only a little longer, and it is too nonsense not to change it once in a few years!

Summary: Although the brake fluid will have different replacement cycles for various reasons, it will not be a big problem if you choose to replace it once every two years, this is an intermediate value, shorter than this cycle does not necessarily and does not necessarily make the braking system last longer (unless the brakes are used a lot, which is also related to driving habits), it is not a big deal to be longer than this cycle, but if it is much later than this time, it is very willing to have a weakening of braking force, intermittent failure, or even complete failure. The master is here to advise you, a bottle of brake fluid is not very much, or life is important!

Photo by Pacific Automobile Network Q&A).

Generally, the replacement interval of brake fluid is 2 years or 40,000 kilometers.

Brake fluid is hydrophilic, after a long period of use, the moisture in the air will penetrate into the inside of the brake oil, the boiling point of water is low, if the owner steps on the brake for a long time, under the conditions of severe friction and wear, the temperature of the brake fluid will exceed 100 in a very short time, resulting in the evaporation of water in the brake fluid into water vapor, scattered in the brake fluid, thus forming an air resistance phenomenon, which will undoubtedly increase the braking stroke of the brake pedal, thereby affecting the braking effect of the braking system.

Under normal circumstances, the greater the air humidity, the easier it is for the moisture in the air to invade the brake fluid, and the shorter the service life of the brake fluid, but if the outside air is very dry and the moisture in the air is very small, in this working condition, the service life of the brake fluid will be longer.

Brake fluid needs to be replaced as a precursor:

1. During emergency braking or continuous braking, the brake indicator flashes intermittently, indicating that the brake oil should be replaced in time.

2. When the normal driving speed exceeds 80km h, the brake is slammed, the braking distance is significantly increased, and the brake pad discharge problem is that the brake oil is outdated.

3. The braking strength is not strong, especially after continuously stepping on the brakes, the foot feeling of the brake pedal has become much softer.

The most important thing in a car is the braking system. Therefore, it is very important to change the brake fluid regularly. In order to ensure the safety of driving, please change the brake fluid in time in the above situation.

The brake fluid is generally changed every 40,000 kilometers or every 2 years.

Brake fluid is changed every two years. Brake fluid is critical and is best changed regularly. When you are maintaining your vehicle and changing the oil, you can change the brake fluid by the way.

When the general vehicle travels normally for 40,000 kilometers or the brake fluid is used continuously for more than 2 years, the brake fluid is easy to deteriorate due to long use, and it needs to be replaced.

How often should the brake fluid be changed

Brake fluid generally refers to brake fluid, also known as force oil, and there are three types: castor oil-alcohol type, synthetic type, and mineral oil type. Brake fluid is a liquid medium that transmits braking pressure in a hydraulic braking system and is used in vehicles with hydraulic braking systems. It is an indispensable part of braking in the braking system, and in the braking system, it is used as a force transmission medium, because the liquid cannot be compressed, so the pressure output from the master cylinder will be transmitted directly to the sub-cylinder through the brake fluid.

Brake fluid is a very critical link in the automobile braking system, which is related to the personal safety of the car owner. Therefore, special care should be taken that different types and brands of brake fluids should not be mixed. Due to the different formulations, mixing brake fluids will cause the brake oil to deteriorate.

In addition, when the brake fluid absorbs water or has impurities, it should be replaced or filtered in time, otherwise it will cause insufficient braking pressure and affect the braking effect. This is particularly important due to the generally humid weather in southern China. When the vehicle brakes deviate, the brake fluid with better quality should be selected to be replaced, and the leather bowl should be replaced at the same time.