【Car owner's home maintenance knowledge】After entering the winter, many car owners pay attention to the maintenance of their cars, and will change the oil in time, check and replace the antifreeze, etc. But it ignores the important part of ensuring driving safety-brake fluid.
1. What is brake fluid? Brake fluid = brake fluid
Brake fluid is a liquid medium that transmits brake pressure in the automotive hydraulic brake system and is used in vehicles that use hydraulic brake systems. Brake fluid, also known as brake oil or force oil, is an indispensable part of the brake system, and in the brake system, it is used as a force transmission medium, because the liquid cannot be compressed, so from the total The pressure output by the pump is directly transmitted to the slave cylinder through the brake fluid.
2. How to choose high-quality brake fluid
1. Appearance:The appearance of high-quality brake fluid is similar to honey, which is light yellow or dark yellow. After dripping in the palm of your hand, the friction will become hotter and hotter. Inferior brake fluid will contain alcohol smell, the liquid is like water, and there may be some impurities and suspended solids.
2. Boiling point:The higher the boiling point, the better, and when the car is driven for a long time, the temperature can rise to hundreds of degrees. If the boiling point of the brake fluid is not high enough, once the temperature of the brake fluid increases with the temperature of the brake pads, it will vaporize and generate bubbles, which will result in the inability to brake immediately, and the safety of driving cannot be guaranteed.
3. Freezing point:The most important thing about brake fluid is that it has good fluidity, which is especially important in severe cold regions. High-quality brake fluid is still sensitive and reliable in low temperature environments. However, inferior brake fluid has a high freezing point, and when the temperature drops to a certain level, it will freeze, greatly reducing braking performance.
4. Corrosive:High-quality brake fluid is less corrosive to metal and rubber and can prolong the life of the brake oil pump. However, poor-quality brake fluid is highly corrosive to metals and rubber, which can cause vehicle oil leakage, overturning during braking, etc., resulting in serious accidents.
3. Replacement of brake fluid
The brake fluid should be replaced in time after using it for a certain period of time. Generally speaking, the brake fluid should be checked once after driving 1-2 kilometers, and the brake fluid must be replaced once every 30,000 to 40,000 kilometers or 2 years. After entering winter, the brake fluid used before may not meet the temperature requirements, so it should be checked and replaced in time.
It is best to go to a professional 4s shop or a specialized repair shop to replace the brake fluid. Before changing the brake fluid, pay attention to whether the maintenance personnel clean the brake system with alcohol first, and the brake fluid of different brands cannot be mixed, and the brake system must be cleaned. When replacing, it is necessary to distinguish whether it is inferior brake fluid by appearance.
Braking is the most important part of a vehicle, and brake fluid plays a vital role in it. Therefore, it is necessary to check and replace in time to prevent accidents.
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