When it comes to the safety of the car's braking system, brake fluid is a critical factor that cannot be overlooked. The hygroscopic nature of brake fluid causes its water content to increase during operation, and once it exceeds a certain proportion, it needs to be replaced promptly. Generally, brake fluid must be replaced when its water content surpasses 5%, as failure to do so can lead to severe consequences, such as reduced braking efficiency, delayed response, and even brake failure.
These issues arise because the water in the brake fluid evaporates into gas, forming vapor resistance under high-temperature conditions, resulting in an extended brake travel. This leads to diminished braking force and, in severe cases, a complete loss of braking capability, posing significant risks to the driver and passengers. Additionally, the lowered boiling point of brake fluid can also contribute to decreased braking performance. Therefore, once water content exceeds 5%, brake fluid must be replaced immediately.
The replacement interval for brake fluid is influenced by various factors, including usage frequency and specific driving conditions. While vehicles frequently used may require replacement around every 30,000 kilometers, those with lower usage frequency may extend the interval to approximately 50,000-60,000 kilometers. However, regardless of usage frequency, it is advisable to promptly replace brake fluid when its water content exceeds 3%, ensuring driving safety. Regular inspection and replacement of brake fluid are essential measures for maintaining the safety of the vehicle.
