How to choose brake fluid? What else is brake fluid used for?

Unified force synthetic brake fluid HZY4 (DOT4) Its product characteristics are: fast conduction speed, sensitive braking, HZY4 (DOT4): borate synthetic brake fluid.

It has excellent high-temperature stability and high-temperature gas resistance resistance. It has low sensitivity to water, low moisture absorption, and the boiling point is not easy to drop. Moreover, it is not easy to expand in contact with rubber, and has good compatibility.

It has excellent chemical stability and excellent corrosion protection for metal parts. This product has good low temperature fluidity at -50°C. It is suitable for all kinds of drum or butterfly braking systems that require the use of HZY4 (DOT4) products, and can be used in all seasons.

Hzy4(dot4): equilibrium reflux boiling point 255°C, wet equilibrium reflux boiling point 158°C.

The characteristics of the brake fluid that are truly qualified have several characteristics: that is, to ensure the flexible transmission of braking force under the conditions of high temperature, severe cold, high speed, damp heat and other working conditions; It is not corrosive to metal and non-metallic materials of the brake system; It can effectively lubricate the moving parts of the brake system and prolong the service life of the brake cylinder and leather bowl. Therefore, it is not only related to the safety of driving that consumers choose qualified brake fluid products, but also is very important to extend the service life of the vehicle's braking system.

Follow the model number on the manual.

Brake fluid, also known as brake fluid, is a functional liquid that transmits pressure in the vehicle braking system and enables the braking system on the wheels to achieve braking action, and its main role is to transmit energy, heat dissipation, anti-corrosion, anti-rust and lubrication.

The performance requirements for brake fluid are:

1. Good viscosity and temperature, low freezing point, and good fluidity at low temperature.

2. The boiling point is high, and there is no gas resistance at high temperature.

3. The quality changes little during use, and does not cause corrosion and deterioration of metal parts and rubber parts.

Extended Information: Precautions for Buying Brake Fluid:

1. Look at the viscosity and color of the product, the brake fluid is too thin to use, there is no color, transparent can not be used (generally the color of the qualified brake fluid is light yellow or dark yellow), the qualified brake fluid is obviously more viscous than water, it looks like diluted honey, and the diffusion speed is slow when poured on the glass plate.

2. The viscosity of inferior brake fluid is as thin as water, and the diffusion speed of pouring a small amount on the glass plate is fast, and you can feel that there is no consistency when you dip your fingers.

3. Comparison, cost decision, quality determination. The raw material of qualified brake fluid is mainly the basic raw material of petroleum processing - ethylene oxide, which is polymerized from ethylene oxide into polyethylene glycol monoether. This results in a high material cost for qualified brake fluid.

This is a minor issue I encountered.

The medium of braking force transmission can also be used as hydraulic clutch oil.

The function of brake fluid is to transfer energy, dissipate heat, prevent corrosion, rust and lubricate.

<> automobile brake fluid is also called brake fluid, and most of the braking system of automobiles is hydraulic braking, which transmits pressure through brake oil to achieve the purpose of braking. Brake fluid has the functions of transferring pressure, heat, rust and corrosion, and lubrication.

If the brake fluid is not used properly, the effectiveness of the braking system will be affected at high speeds, when braking at high power, when braking frequently, or in extreme hot and cold weather.

Not only reduce the service life of braking system parts, but also can not ensure the safe driving of the vehicle, and the worst thing is brake failure.

The replacement of brake fluid is a routine maintenance item of the car, which involves safety, and the replacement must be timely, otherwise the consequences will be unimaginable.

Why change your brake fluid regularly?

As the brake fluid itself has hygroscopicity, it will absorb moisture in the air during use, and with the increase of use time, the moisture content of the brake fluid will increase, the boiling point will decrease, and the steam generated will hinder the transmission of pressure and affect the braking effect.

At the same time, the wear of the brake pads will lead to a decrease in the level of the brake fluid, and if the fluid level is too low, the braking effect will be affected, and even the brake will fail.

How long does it take to change the brake fluid when using the car normally?

The car's maintenance manual usually indicates the replacement requirements, if not, it can be tested, and if the brake fluid becomes cloudy or the water content is too high, it must be replaced. I really don't want to test, so it is recommended to replace it every two years or 4w kilometers.

Now some cars add a sensor to the brake oil pot to monitor the condition of the brake oil, once the water content exceeds the standard or the brake fluid is not enough, the dashboard will light up the warning light, and when to change the car leakage is more intuitive.

Classification and quality grade of brake fluid:

DOT3: mostly alcohol ether type, poor water resistance, low boiling point.

DOT4: mostly ester type, better water resistance than DOT3, higher boiling point, is the mainstream on the market now.

DOT5: Mostly silicone oil type, high boiling point but poor durability, mostly used in racing.

Most of them are borate type, improved civilian version, ** high, the pursuit of high performance can be used this gear.

How to choose a good brake fluid?

1.It is clear and transparent without impurities, and there is no precipitation after a long period of use.

2.The boiling point is high.

3.Excellent lubricity at extreme temperatures.

4.Does not corrode rubber and metal.

The pH value is usually between the values that are alkaline.

The common brands of brake fluid are Shell, Mobil, Bosch, etc., and it depends on the quality level, we can choose according to our own needs.

The role of brake fluid:

1。transfer pressure;

2。transfer of heat;

3。anti-rust and anti-corrosion;

4.Lubrication.

The brake fluid replacement interval is based on the condition of the vehicle. In general, Sun said, the brake fluid needs to be changed every two years, or after about 10,000 kilometers. If the vehicle's sail chain is used more frequently, or if it is often driven in bad road conditions, the brake fluid change interval may need to be shortened.

<> "Many owners of car beauty and maintenance shops have more or less had brake fluid purchased into the garbage, resulting in customer complaints and other problems, in response to this kind of problem, then let's take a look at how to buy brake fluid."

The choice of the type of brake fluid: the owner should try to choose synthetic brake fluid instead of the alcohol brake fluid that has been eliminated.

The color of the brake fluid: Usually the good quality brake fluid should be dark yellow or light yellow, so the owner can choose according to the color of the brake fluid, remember not to choose the brake fluid with thin and transparent oil.

The grade of brake fluid: Generally speaking, the higher the grade of brake fluid, the higher its quality, and the more stable its performance is. Therefore, it is recommended that mid-to-high-end models choose brake fluid that meets the HZY4 standard, while cars of micro and low-end models choose HZY3 standard brake fluid.

Punch hood. Where to buy brake fluid: It is recommended that car owners should buy brake fluid from qualified chain stores or manufacturers who have provided supporting brake fluid to automobile factories for a long time, so as to ensure that they can buy products with stable performance and high quality.

In life, we need to use a variety of liquid dragon riding containers for the driving of the car, but there are some liquid oils that we often use, I don't know how long to replace, and I don't know which one should be replaced more suitable for their vehicles, such as the brake system brake fluid that we often use in our lives, which is very important for us to drive the car safely. Because this braking system is the most important system in our entire car is the most important system to ensure that we reduce various accidents, so we need to understand this brake fluid, brake fluid is an intermediate medium that transmits pressure to the brake caliper when we step on the brakes, and its main role is to transmit the role.

At present, there are many kinds of brake fluid classifications in our market, but synthetic brake fluid is relatively good quality. Our general brake fluid replacement cycle is about two years, and we exceed the specified use time for a short period of time is not much of a problem for our long driving. However, if we do not replace it for a long time, then when we are driving intensely, our braking system may fail, resulting in us not being able to brake in time, resulting in brake failure and accidents.

The situations in which the brake fluid needs to be replaced are: 1. The brake fluid absorbs water or has impurities; 2. During the normal driving of the vehicle, when the brake is light and heavy, the brake oil should be replaced in time; 3. The expansion of the leather bowl of the sub-pump is too large; 4. Brake fluid needs to be replaced every two years. The precautions for the use of brake fluid are:

1. Avoid mixing with gasoline engine oil; 2. Replace it regularly; 3. Choose good quality brake fluid.

You should choose the right brake fluid according to your car, and this cannot be mixed, and it should be replaced in about two years.

That is, when there is some fault or needs to be replaced, pour the brake fluid into the corresponding position.

First of all, if you use brake oil, you must use a better brand, and it is best to replace it once every six months, so that the brakes will be smoother, and secondly, you should also use the same type of brake oil, do not mix different oils, otherwise it will also lead to poor use results.

Brake fluid, also known as brake fluid or force oil, its English name is brakefluid, which is an indispensable part of braking system braking, and in the braking system, as a force transmission medium, because the liquid cannot be compressed, so the pressure output from the master cylinder will be directly transmitted to the sub-cylinder through the brake fluid.

Hydraulic brake (brake) fluid is a functional liquid hopper hand body used to transmit pressure in the hydraulic braking system to stop the wheel from turning. Its braking working pressure is generally 2MPa, and the high can reach 4 5MPa. All liquids are incompressible, and when the liquid is under pressure in a sealed container or in a line filled with liquid, the pressure is transmitted quickly and evenly to all parts of the liquid.

Hydraulic brakes work using this principle.

Brake fluid standard GB12981-2012 "Motor Vehicle Brake Fluid" is a mandatory standard, with a total of 15 technical index requirements, namely appearance, equilibrium reflux boiling point, wet equilibrium reflux boiling point, kinematic viscosity (100, -40), pH value, liquid stability, corrosivity, low temperature fluidity and appearance, evaporation performance, water capacity, liquid compatibility, oxidation resistance, rubber compatibility, stroke simulation air energy and anti-rust performance group.

<> "A comprehensive look at brake fluid.

When it comes to the braking system, many people will think of well-known brands of brake calipers and high-performance brake pads, but a set of excellent braking systems want to "brake" at critical moments, only these "hardware" are obviously not enough, but also need an important "software" to cooperate with them, in order to achieve the ideal braking effect, this is brake fluid.

Introduction to brake fluids.

1. What is brake fluid? What does it do?

The so-called brake fluid, also known as automobile brake fluid, is the indispensable "blood" of the vehicle braking system, it is a functional liquid that transmits pressure in the vehicle braking system and enables the braking system on the wheels to realize the braking action, and its main role is to transmit energy, heat dissipation, anti-corrosion and anti-rust and lubrication.

Imagine that the moment you press the brake pedal, it is responsible for transmitting people's "foot strength" all the way to the brake system through the brake hose, so that the piston in the brake caliper can push the brake pads to rub against the brake disc to achieve the braking effect, and then stop.

If it weren't there, even if you pressed the brake pedal with your mighty adamantine legs, you wouldn't want to slow down the car from driving, let alone stop.

2. Constantly overcome "water and gas", and the three stages of development experienced by brake oil.

Stage: Castor alcohol brake fluid (also known as alcohol brake fluid).

This kind of brake fluid is the type of brake oil used in the automobile brake system early, its main raw materials are castor oil and low-carbon alcohols, which are made of refined castor oil and low-carbon alcohols, and can obtain colorless or light yellow clear liquid after precipitation, which is alcohol-type brake oil.

Advantages: easy access to raw materials, simple production process, good lubrication performance.

Disadvantages: low boiling point, bridge and easy to produce gas resistance, and the performance is not rough and stable when working at low temperature.

This kind of brake fluid appeared earlier in 1970, when the domestic automobile brake system used this kind of castor alcohol brake fluid, with the passage of time and the application of new technology, the requirements for automotive brake fluid are getting higher and higher.

This type of brake fluid was required to be phased out in January 1990 in a new regulation, and it was required that all cars manufactured after May 1, 1990 should not use this type of brake fluid, so the castor alcohol type of brake fluid was withdrawn from the stage of history.

The braking problem is a part that every car owner is very concerned about, because it is related to the safety of the car, and when enjoying a convenient and fast lifestyle, safety is the first and must be guaranteed. Therefore, it is necessary to check the braking system more on daily driving to ensure the life safety of the owner.

After the brake fluid is used for a long time, the leather bowl and piston in the brake pump will be worn, causing the brake fluid to be turbid, so it needs to be replaced to ensure the normal use of the brake system. Brake fluid is very important for the braking system, when choosing brake fluid, you should pay attention to the choice of the same specifications as the original car, big brand, quality assurance of Boozer Slim Dun (BSD) brake fluid. If it is an unqualified and average quality brake fluid, it will corrode the leather plug of the brake oil pump, and it will also have an impact on the effect of the brake head.