Why many auto repair shops rarely recommend that you change your brake fluid

We all know that brake fluid is a very important part of maintenance, but in some relatively large auto repair shops and 4S shops, they don't care about the replacement of brake fluid, but some small auto repair shops prefer to change brake fluid, what is the reason for this?

Then let's popularize it first, why replace the brake oil, because the brake fluid will deteriorate or have sediment over time, and the brake fluid will deteriorate, mainly because the brake fluid is doped with water, which will lead to the excessive water content of the brake oil, so it is more dangerous, if the temperature is relatively high, the moisture in the brake fluid will become water vapor, which will affect the braking effect of the car, it is very dangerous, do not underestimate it, once there is danger will kill you, So don't joke with life.

Generally speaking, there is no clear replacement time for brake fluid, and our vehicles can change the brake fluid once when the mileage exceeds 60,000 kilometers, so some friends will ask, how can we know if the brake fluid has deteriorated? This is very simple, there is a thing called - brake fluid detection pen, this can be bought at the auto repair shop, buy it and measure it yourself.

So the question arises again, why are some large auto parts factories not willing to change the brake fluid? The reason is - the operation is troublesome! In fact, this is not a technical problem, but because of the trouble, a change of brake fluid requires more than two technicians to cooperate with each other to complete.

One person needs to put oil and another person to step on the brake pedal, in fact, pedaling is a very tiring job, generally need to be pedaled dozens or even hundreds of times. In addition, there is also a problem that the profit of changing the brake fluid is too small, and if you don't make any money, you will definitely not be happy to change it. However, in order to make ends meet, some smaller shops can only change for you without fear of trouble.

I still hope that the matter of changing the brake fluid can arouse the strong attention of all of us, after all, it is our safety guarantee. We must change the brake fluid regularly, take care of our car, but also love our lives.

Changing the brake fluid is more cumbersome.

Brake fluid is also brake fluid, normally speaking, brake fluid is to be changed regularly, but if the 4S shop often asks you to change it, this is suspected of fooling you.

After consulting the user manuals of some models, the maintenance tips given by the manufacturer are generally replaced every 2 years or 40,000 kilometers. Then the fluid level of the brake oil pot should be checked regularly, keep the fluid level between the max and min markings, and the brake fluid can be replenished when the fluid level is low.

Compared with the oil change time, the general engine oil is changed every 6 months or 10,000 kilometers, and the brake fluid replacement cycle is relatively long. However, this does not mean that the brake fluid is not important, the brake fluid is used for the hydraulic braking system of the car, in order to ensure its effect, the brake fluid needs to be replaced regularly, otherwise it will bring hidden dangers to the car if it is not replaced for a long time, and there may be problems such as insufficient brake pressure and corrosion of the braking system.

Some car owners may think that regular replacement of brake fluid is still too wasteful, and even some car owners will buy a test pen online that can detect the moisture content of brake fluid, if the test result shows that the state of the brake fluid is no problem, then there is no need to replace it.

This test method is reasonable, but it needs to be reminded that there are almost hundreds of brake fluid moisture detection pens sold on the Internet. To ensure accurate test results, it's a good idea to do a small experiment before using it. For example, pour some brake fluid into a small cup and see the results.

Then add a few drops of water to the cup and test the results.

The brake fluid does not need to be changed at all, don't be fooled by 4s, this is because the brake fluid replacement cycle is very long. The brake fluid replacement interval is 2 years or 40,000 km, but it still depends on the cycle specified in the user manual.

Of course, the replacement cycle is just to give us a reference, if you want to know whether the brake fluid needs to be replaced, you have to check the moisture content of the brake oil, too much water content will directly affect the dry and wet boiling point, which will affect the performance of the brake oil, and need to be replaced in time.

And different types of different brands of brake fluid can not be mixed, due to different formulas of brake fluid additives or different indicators of brake fluid, there will be different effects when used. If the brake fluid inhales water or other impurities, the filter should be replaced in time to avoid insufficient braking force during braking, which will affect the braking effect.

In the process of driving, if there is a situation of brake deviation, it is recommended that the owner of the car brake system for a comprehensive inspection, if it is found that the brake cylinder bowl is too expanded, it means that there may be a problem with the quality of the brake oil.

Brake fluid has been used for a long time, deterioration or precipitation will occur, mainly because the brake fluid is doped with water, which will lead to the water content of the brake fluid exceeding the standard, if it works at high temperature, the moisture in the brake fluid will become water vapor, which will affect the braking effect, which is more dangerous. Therefore, it is still necessary to check regularly and change the brake fluid in time.

There are three main precursors to the need to change the brake fluid:

1. In the case of continuous braking or emergency braking, there will be intermittent flashing alarm of the brake indicator, which is due to the reduction of brake oil, which should be detected and replaced in time, otherwise the braking effect will be affected.

2. When the car is driving normally and the speed reaches 40km h, you will find that the braking distance has become longer, if it is not the brake pads, it is a problem with the brake fluid.

3. When the brake fluid deteriorates, the feeling of stepping on the brake pedal is soft, even if it is stepped on to the end, and after continuous and frequent braking, the feeling of stepping on the brake pedal is softer and more elastic.

Some people regret changing the brake fluid, it is possible that the effect of the brake has deteriorated after the change, and it will feel softer when the brake pedal is pressed. The reason for this may be the presence of gas in the oil pipe, followed by the defective quality of the brake fluid that may be replaced, etc. Generally, after replacing the new brake fluid, the braking effect will be better, if the effect is not good, you should ask the maintenance shop, and then test the problem again.

Usually, the brake fluid is changed once every two years or so, and some manufacturers stipulate that it should be replaced once every 40,000 kilometers, but this is only for reference, and it should be considered in combination with the actual situation.

The brake fluid needs to be changed.

The maintenance tips given by the manufacturer are generally replaced every 2 years or 40,000 kilometers. Then the fluid level of the brake oil pot should be checked regularly, keep the fluid level between the max and min markings, and the brake fluid can be replenished when the fluid level is low.

In order to ensure its effect, the brake fluid needs to be replaced regularly, otherwise it will bring hidden dangers to the driving if it is not replaced for a long time, and there may be problems such as insufficient brake pressure and corrosion of the brake system.

Precautions for changing brake fluid:

1. Brake fluid can not be mixed with air: change the brake fluid is most afraid of mixing into the air, if it is mixed with air, it will be abandoned, at this time can not be too troublesome, for safety it is necessary to re-deflation until there is no air in the system.

2. The oil drain bolt should be tightened to prevent oil leakage: the oil drain bolt at the brake cylinder is not tightened, which is caused by carelessness. Once the bolts are not tightened, the consequences of brake fluid leakage can be imagined, and it will be a dangerous hidden danger if it is not detected in time while driving.

So when you change the brake fluid, it's a good idea to check if the bolts are all tightened. Moreover, brake fluid is very corrosive and can affect other parts of the car.

This brake fluid does not necessarily need to be replaced, and it can generally be checked in about 4 years. Because it is more troublesome to change the brake fluid by yourself, it is recommended to go to a local car repair company to replace it, which is safer.

If the brake fluid needs to be replaced, if the brake fluid is not replaced for a long time, it will affect the use time of the brake pads.

Brake fluid must need to be replaced, because when the car brakes, water molecules will be produced under the action of high temperature, plus the brake fluid belongs to a high-concentration liquid, which has a strong adsorption capacity for water, so the moisture content of the brake fluid will definitely increase over time, thus affecting the braking effect of the car. In general, it is very important to change the brake fluid regularly, as for the replacement time, it is generally 2 years or every 40,000 kilometers driven. Of course, the most direct way is to check the moisture content of the brake fluid, if it exceeds 3%, it needs to be replaced.

Brake fluid needs to be replaced regularly, and the replacement cycle is about 3 years or 60,000 kilometers, whichever comes first. Depending on the model, the replacement interval is slightly different, and you can check the maintenance manual for accuracy. Problems to be aware of when changing the brake fluid.

First of all, don't make a mistake about the model, there are dot3, dot4, dot5, the brake oil pot will indicate what model the car uses, you must choose the same model, most cars use dot4. Secondly, changing the brake fluid can not enter the air, once it enters the air, it must be drained clean, otherwise the brake will become soft, and the braking effect will become worse. Because air enters the pipeline, the air can be compressed, so the braking effect will be worse.

This requires that there should always be oil in the oil pot, which cannot be missing, and can be added as you go. The oil drain port should be tightened in time when the oil is not discharged, and do not allow air to enter through the oil drain port.

The method of replacing the brake fluid is: 1. Turn off the vehicle, open the engine compartment cover, use a syringe to pump out the oil in the oil storage tank, and pump it to the bottom of the tank; 2. Fill the oil pot with new brake fluid; 3. Use a jack to jack up the vehicle, starting from the rear wheel, and remove the tire; 4. Find the oil drain screw of the brake cylinder and remove the rubber dust cap on it; 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. Go to the car and start to step on the brakes, if you find that the rubber pipe is discharged from the shallow new oil, the oil change of this wheel has been completed, stop stepping on the brakes, install the tires, and repeat the operation for the next three tires; 7. After all four wheels are discharged, observe whether the oil volume of the oil storage tank in the engine compartment has reached the lower limit, and if it reaches the end, new brake oil can be added appropriately.

Vehicle maintenance is something that every car owner will do, although it is a little troublesome, but for the sake of their own safety, we still have to go when it comes to maintenance. Brake fluid is part of maintenance, but in some large-scale, more business auto repair shops, it seems that the replacement of brake fluid does not care so much, but some small auto parts shops or repair shops have a soft spot for changing brake fluid, why is this?

Here's a question to everyone, that is, why change the brake fluid? In fact, generally speaking, the 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.

Otherwise, once in a high temperature environment, the moisture in the brake fluid will turn into water vapor, which will have a great impact on the braking effect of the car, and even make your life lost in an accident.

There is no clear time to replace the brake fluid, and the brake fluid can be changed once when the vehicle mileage exceeds 60,000 kilometers. So how can you tell if the brake fluid has deteriorated? You can go to the auto repair shop to buy a brake fluid test pen and measure it.

Generally speaking, if the airtightness is relatively strong, running 60,000 kilometers is basically no problem.

Why don't large auto parts manufacturers like to change brake fluids? It's simple, because it's cumbersome to operate! There is actually no technical difficulty in changing the brake fluid, but the key is that it is very troublesome, and it requires more than two technicians to cooperate with each other.

One person puts the oil, and the other person steps on the brake pedal to change the brake oil, and the person who pedals is very tired, often needs to press the pedal dozens or even hundreds of times. In addition, the profit of changing the brake fluid is too small, and the money is small, and others are of course not happy. And in order to make a living, no matter how troublesome it is to change the brake fluid, the shop has to take this job!

Brake fluid whether we change it regularly or depending on the situation, should pay enough attention, braking force is the most basic safety guarantee, ordinary driving, must ensure that the braking system is foolproof. Brake is an important function of the car, I don't know how many safety problems caused by brake failure have been heard, so this is completely worthy of our car owners' attention, regular replacement of brake fluid, should be done as a necessary course for us to take care of their cars.

Why are many auto repair shops reluctant to change brake fluid? The old driver tells you what is greasy.

After buying a car, you have to keep up with the maintenance of the vehicle. Many car owners feel that although vehicle maintenance is very troublesome, they will take their cars for maintenance regularly for the sake of normal use of the vehicle and for their own safety. Changing the brake fluid is part of car maintenance.

But in fact, in some large-scale and multi-business auto repair shops, they do not pay attention to changing brake fluids. And some small repair shops are very important to this, why is that?

To figure this out, we first need to know why we need to change the brake fluid. In fact, there is no clear standard for changing the brake fluid once more. Generally speaking, the premise of changing the brake fluid is that the brake fluid has deteriorated or the brake fluid has sediment.

The deterioration of brake fluid is usually due to the mixing of some water, once the water content of brake fluid exceeds the standard, the brake fluid basically meets the standard of deterioration.

As we all know, water will evaporate into water vapor at high temperatures, so that the brake fluid will produce air resistance, the brakes will become soft, and the braking effect will be seriously reduced. If you are not sure whether the brake fluid is deteriorated, you can use some instruments to detect, the easiest way is to go to the auto repair shop to buy a brake fluid for testing, etc.

Generally speaking, as long as the sealing is strong, there is basically no problem to run 60,000 kilometers, and more than 60,000 kilometers will reach the tail end of the brake fluid life, so why do large auto parts factories not like to replace the brake fluid? Very simple, because of the troublesome operation, there is actually no technical difficulty in changing the brake fluid, but the key is that it is very troublesome, and more than two technicians need to cooperate with each other. The maintenance master took such a long time and worked so hard to finally replace it for you, in fact, his working hours are pitiful, so some technicians in the maintenance plant are unwilling to replace the owner.

Perhaps brake fluid, which is related to life safety, is rarely paid attention to, but it cannot be said that it is not valuable. As long as we check our car often and find that it is not much the same as before, we can drive to the 4S shop to repair and inspect, and the life is guaranteed to drive the car further.