Maintenance issues on the brake system，Most car owners have high attention to brake pads，I often check it myself，But how about braking oil? Comparison of comparison，The owner will not care very much。So do the driver friends know how long to change the brake oil?

What is brake oil?

Handbag oil is also called car brake fluid，Early cars used mechanical braking drum brakes。With the development of hydraulic technology，Safe and reliable hydraulic pressure brake systems are widely used on cars。Auto brake fluid (brake oil) is a liquid for automotive liquid suppression system。When the driver steps on the brake，Power stepped on the pedal，Pistons from the brake total pump，Pass energy through the brake oil to each pump in the wheels，Raise the friction film，The purpose of stopping seabet appthe progress of the vehicle，​​When the brake is stopped，Return to the spring and pull back the friction film to the original position。

Mobility of brake oil plays the role of force transmission in the whole process。brake oil has water absorption characteristics，If it is not replaced for a long time, it will corrode the braking system，bring hidden dangers to driving。At the same time，After the brake oil absorbs water，The boiling point will be reduced，Prone to insufficient braking pressure，Affects braking effect。

How long should you change your brake oil?

It is recommended to change every 2 years，or the mileage of the vehicle reaches 40,000 kilometers and replace it once。

When must you change the brake oil

1、The vehicle is in normal driving，If the brakes occur when the brakes are suddenly heavy，Should replace the brake oil in time，Wash the brake system with alcohol before replacing it。

2、When the vehicle brake appears to run off，To conduct a comprehensive inspection of the braking system。If the split -pump leather bowl expansion is too large，It means that there may be problems with the quality of the brake oil。At this time, you should choose a good quality brake oil for replacement，Replace the leather bowl at the same time。

3、When the season changes，Especially in winter，If the braking effect is reduced，It may be that the level of brake oil is not suitable for winter climate，Replace the new brake oil at this time，You need to choose a brake oil with a small viscosity at low temperature。

4、Mixed use of brake oil，Try to choose a reliable seabet loginbig brand，Do not mix between different brands，This will cause a decrease in the oily indicator of the brake。

5、When mixed or inhaled water when the brake oil is mixed or inhaled，or when you find that the brake oil has impurities or sediments，Should be replaced or carefully filtered，Otherwise it will cause insufficient braking pressure，It affects the braking effect。

How to distinguish the good or bad of brake oil?

No. ——，Inferior brake oil under high temperature conditions, it is easy to vaporize to form a bubble that is easy to observe

Second，Bad oil blended with methanol or mixed alcohol with water has strong corrosiveness for metal objects，Put the metal object in it to observe whether it is rusty to identify

Third，The inferior brake oil in the cold area will solidify to varying degrees。

You can change the brake oil or go to the 4S shop or a professional maintenance store for your own，If you buy it, general high -end ones are about 100 yuan，If you are too expensive, you must brighten your eyes and consider it clearly。

Master Comments: The vehicle is under normal driving，If the brakes occur when the brakes are suddenly heavy，Should replace the brake oil in time，Wash the brake system with alcohol before replacing it。When the vehicle brake appears to run off，To conduct a comprehensive inspection of the braking system。If the split -pump leather bowl expansion is too large，It means that there may be problems with the quality of the brake oil。At this time, you should choose a good quality brake oil replacement，Replace the leather bowl at the same time