Why do you have to change the brake fluid every two years, and why do some people never change it?

Hello, brake fluid: For a long time, the proportion of moisture in it will be high, and the boiling point will be low, which will lead to insensitive braking system, and the braking effect will be reduced, and the water will be too heavy, and the oil will be dirty, and it will be easy to damage the brake master cylinder, sub-cylinder, ABS pump, etc.

First, the reason for replacing the brake fluid in the car is that the brake fluid has been used for a long time, although it does not have much impact on the surface, but when the vehicle is in emergency braking or driving on downhill roads for a long time, the problem is easy to appear. The braking system will cause the temperature of the brake fluid to rise rapidly during long-term or emergency braking. And the brake fluid itself has strong water absorption characteristics, and it will absorb.

For safety; No, it's to save money.

Theoretically, the provisions in the vehicle maintenance manual should prevail. If you know how to drive, you can also decide according to your feelings. For example, it is stipulated that 5,000 kilometers to change the oil and filter, and some people will change it after 10,000 kilometers or more than 10,000 kilometers.

It's best to change it, everything has an expiration date.

Do you need to change your brake fluid every two years? Why is it okay for someone to never change it? It turns out that the trick is here.

Generally, the brake fluid is replaced for 40,000 kilometers in two years, and if the mileage is small, the time can be slightly extended.

After a certain period of use, the boiling point will be reduced, pollution and different degrees of oxidation and deterioration of brake fluid, so its quality and performance should be checked in time according to climate, environmental conditions, seasonal changes and working conditions, so as to replace it in time. Under normal working conditions, the brake fluid should be replaced after two years of use or 50,000 kilometers.

In principle, different types of brake fluids should not be mixed, so as not to cause chemical reactions between them and affect the braking effect. Depending on the model, the brake fluid used is often different. Brake fluids include alcohol brake fluid, mineral oil brake fluid, silicone oil brake fluid, synthetic brake fluid, etc.

Precautions for the use of brake fluid.

1. Brake fluid cannot be mixed. All kinds of brake fluids must not be mixed, otherwise the braking effect will be lost due to delamination.

2. Keep it clean. When filling or changing the brake fluid, care should be taken to clean it, the brake fluid must be filtered, and no fine impurities are allowed to mix into the braking system.

3. Pay attention to moisture-proof. The container where the brake fluid is stored should be sealed to prevent water from mixing and absorbing water vapor to reduce the boiling point; Brake fluid that has been replaced and packed in an unsealed container cannot be used again.

4. Replace it regularly. The brake fluid should be replaced regularly, because the alcohol ether brake fluid has a certain water absorption, so in general, the brake fluid should be used.

Replace it in one or two years to prevent the brake fluid from affecting the braking performance after moisture absorption. Changing the brake fluid should be done every year after the rainy season.

Brake fluid, commonly known as brake fluid, is replaced once every 2 years or 460,000 kilometers.

Three kinds. They are castor oil-alcohol type, synthetic type, and mineral oil type.

1. Castor oil-alcohol type: It is made of 45%-55% refined castor oil and 55%-45% low carbon alcohol (ethanol or butanol), and is precipitated to obtain a colorless or light yellow clear and transparent liquid, that is, alcohol-type automobile brake fluid. Castor oil plus ethanol is alcohol type No. 1, and castor oil plus butanol is alcohol type No. 3.

The raw materials of alcohol-type brake fluid are easy to obtain, the synthesis process is simple, and the product has good lubricity; The disadvantage is that the boiling point is low and the properties are unstable at low temperatures. Ethanol vapor appears above 45 °C in alcohol type 1, resulting in gas resistance; At -25 °C, castor oil precipitates as a milky white gelatinous substance, and increases with the decrease of temperature, blocking the braking system and making the braking system fail heavily.

2. Synthetic type: made of ether, alcohol, ester and other additives mixed with lubrication, anti-oxidation, anti-rust, anti-rubber swelling and other additives.

3. Mineral oil type: made by adding thickeners and other additives to the refined light diesel oil fraction.

Generally speaking, if the car is used more frequently, the brake fluid can be changed once when the car is about 30,000 kilometers. If the car is used less frequently, it can be replaced once when the car has traveled about 60,000 kilometers. Depending on the brand of the vehicle, the time to change the brake fluid is also different, and the specific replacement cycle can be consulted in the car instruction manual.

When changing the brake fluid, it is best to change the original brake fluid. Because brake fluid is an important existence in the automobile brake system, which is related to the safety of the car, the quality of replacing the original brake fluid can be guaranteed.

Brake fluid selection criteria.

The standard manual for choosing brake fluid is also clear, but many car owners do not pay much attention to it. In addition, most brake fluid reservoirs are clearly marked on the lid. Commonly used brake fluid can be divided into dot3, dot4, and other labels, different grades represent the grade of brake fluid, the higher the grade, the higher the boiling point of the brake fluid, the better the ability to resist high temperatures.

The high-grade brake fluid of the model can not be replaced by the low-grade one, and the low-grade brake fluid can be upgraded to the high-grade one, but the brake fluid of different grades cannot be mixed and needs to be completely replaced. DOT3 is currently used in some low-end vehicles, while DOT4 is the brake fluid marking for most mainstream models.

For the original DOT3 brake fluid, it can be upgraded to DOT4 brake fluid, the cost will not be much more, but the braking performance will be significantly improved.

It is recommended to replace the brake fluid once every two years and 40,000 kilometers.

1. The speed of the car is not good, the cow is that no matter how fast the car can stand firm, the first safety of the car is the brake system, the quality of the brake fluid in the brake system is very important, the hydraulic transmission and the quality of the brake oil affect the brake performance when the brake fluid works, and the brake distance will increase if the brake oil is not replaced for a long time, and the brake failure will be caused in serious cases. It is recommended to change the brake fluid once every 2 years and 40,000 kilometers. A high-quality braking system is the key to a safe and comfortable driving experience.

2. Common brake oil testing methods, brake oil pH detection method, brake oil boiling point detection method, brake oil copper ion content detection method, brake oil water content detection method, brake oil turbidity detection method. Brake fluid moisture content testing is the simplest, easiest and quickest.

3. The brake oil has hydrophilicity, (the brake oil likes to absorb water and fuse) the water content of the brake oil must be replaced when the water content exceeds 3%, the brake pads clamp the brake disc for braking, and a large amount of friction heat is generated during braking, and the heat is transferred to the brake oil through the brake pads, and the temperature of the brake fluid rises, and when the water content in the brake oil exceeds the standard, the water in the brake oil will produce bubbles, and the air resistance will be generated when the brake is stepped on. 4. The braking system is related to driving safety, and it is necessary to pay attention to the quality of brake oil. The quickest and most effective way to measure is the brake fluid moisture test.

It is recommended that the brake fluid be replaced once every 2 years and 40,000 kilometers. Good braking performance can bring a safe and comfortable driving experience.

Generally speaking, it is recommended to change the brake fluid every 2 years, but this cycle can be longer or shorter depending on the use.

First of all, it is necessary to understand what role the brake fluid plays in the automobile braking system, simply put, it is to transfer pressure in the braking system, because the liquid cannot be compressed, so the pressure output from the brake master cylinder will be transmitted to each sub-cylinder through the brake fluid to play the role of braking. There are all kinds of brake fluid, so the replacement cycle is not the same, but if you choose to replace it once every two years, there will be no big problem, this is an intermediate value, shorter than this cycle will not necessarily make your braking system last longer, mainly according to personal driving habits.

If the brake pedal of your car will be soft when pressed, the brake fluid should be changed at this time, because the deterioration of the brake fluid will make the brake pedal give people a soft feeling even if you press it to the end. Especially after continuous and frequent braking, the feeling of pressing the brake pedal will be much softer than before, and the brake fluid has a high boiling point, ensuring that the high temperature generated during continuous braking or emergency braking does not affect the braking effect. Generally around 260.

There are many reasons for the water absorption of brake fluid, such as hot weather, the frequency of use of the braking system, and the design type of the braking system.

In general, the brake fluid replacement interval is 2 years or 40,000 km. However, it is not just the cycle alone that determines the replacement time, it needs to be combined with the moisture content of the brake fluid. When the moisture content exceeds 3%, it is time to be recalled; If it's more than five percent, be sure to replace it as soon as possible.

For the fluid that needs to be replaced in the car, many people don't know why they need to be replaced, for example, brake fluid, if the brake fluid is not replaced in time, the brake system may have certain problems, which will seriously affect the braking performance, therefore, the brake fluid is also particularly important.

Brake fluid = brake fluid.

Brake fluid, also known as brake fluid, is an indispensable part of braking system, which acts on a force transmission in the braking system, because the liquid is incompressible, so it will be output to the sub-cylinder through pressure.

How to choose a good brake fluid.

A good quality brake fluid looks like honey in color and will heat up when rubbed, while a low-quality brake fluid will smell of alcohol and is not sticky like water, and there will be impurities if you look closely.

No matter what kind of liquid on the vehicle must have good fluidity, so the choice of brake fluid should also depend on its freezing point, especially in the cold area, if it is an inferior brake oil, the phenomenon of coagulation will occur when the temperature is too low, resulting in inability to flow and reduce braking performance.

Cars are mechanical, and the impurities in inferior brake fluid may be corrosive, while high-quality brake fluid is very corrosive and almost negligible.

When will the brake fluid be replaced.

Generally speaking, the brake fluid should be checked when driving 1-20,000 kilometers, and it must be replaced when it reaches 3-40,000 kilometers or 2 years. However, it should also be replaced according to the actual situation. And the best way to change the brake fluid is to go to a professional repair shop to replace it, because changing the brake fluid requires cleaning the brake system first, and it is more difficult to operate it personally.

Cars have entered every household, many people have at least one car at home, but there are also many people who buy a car for the first time, and they don't know much about the maintenance of the vehicle, what is the role of brake fluid? How often do I need to replace it? There are many problems in my heart, I don't know how to deal with it, so let's introduce to you the purpose of the brake fluid and the time to replace it.

The role of brake fluid

Brake fluid can also be called brake fluid, in the car, the role of brake fluid is very important, the safe driving of the vehicle depends on the brake fluid. In the operation of automobiles, brake fluid plays the role of energy transmission, heat dissipation, anti-corrosion and anti-rust and lubrication. Brake fluid can not be added indiscriminately, be sure to see the brand and instructions, and can not be mixed with other liquids, otherwise it will lead to an accident in the vehicle, and the brake fluid must be in a liquid state, can not become solid.

Brake fluid replacement time

The brake fluid has a certain service life, and it usually needs to be replaced, generally every two years, and it can also be replaced every 40,000 kilometers. Usually when we use the car, often uphill and downhill, usually when driving the vehicle often need to brake many times, which will lead to the brake fluid boiling vaporization, once the brake fluid vaporization, it will affect the driving of the car, the probability of accidents will also increase a lot, so for the driving safety of the owner, be sure to change the brake fluid regularly. If you encounter wet areas, the cycle of brake fluid replacement needs to be shorter, once a year, which can better ensure the safety of vehicle driving.

After this introduction, I believe we all know the importance of brake fluid, and I hope that you must not extend the use of brake fluid in order to save money, and replace it in time to ensure driving safety and reduce the occurrence of accidents, so that you are not only responsible for yourself, but also responsible for your family. Don't be greedy for cheap when choosing brake fluid, and choose a better brake fluid, so that you can also protect yourself.

It is more appropriate to replace the car brake fluid once every 1 year. Two years is appropriate, because the general driving has very little wear and tear on the brake fluid.

Generally, it is changed every two years or 40,000 kilometers. It's a good idea to change it every two years.

It is more appropriate to replace it once every six months, and it is not appropriate to replace it once every two years, because replacing it once every two years will affect the normal driving of the car, and there will be some failures, and it will also cause some safety hazards.

About three months, it is not suitable, and if it is not replaced for too long, it will cause serious wear and tear, and at the same time, it will also consume the functionality of the car.

It can be done in about two years, and it generally needs to be replaced when it reaches 40,000 kilometers. Two years is a good period.

You can change it once every two years, but you have to judge it according to your actual situation, it is okay to change it once every two years, and it is like this according to the regulations.

It is recommended to change it every two years, and it is very appropriate to change it every two years, and this cycle can be long or short according to the actual situation.

It is the most suitable to change it once a year, and it can also make the car brake fluid better and better, and it is also a very good maintenance for the car, two years is a bit too late.