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How Often Should Brake Fluid Be Replaced? How Many Liters Should Be Replaced at a Time?

1 Answers

Laila

07/29/25 1:43pm

Brake fluid should be replaced every two years, and only 1-2L is needed. During prolonged or emergency braking, the brake system causes the temperature of the brake fluid to rise rapidly. Brake fluid itself is highly hygroscopic, and the ingress of moisture directly lowers the boiling point of the brake fluid, reducing braking force. This can also lead to vapor lock in the brake lines, affecting braking performance. Below are three characteristics of brake fluid: 1. Automotive brake fluid has a very low freezing point, ensuring good fluidity in low-temperature conditions. 2. Automotive brake fluid has an extremely high boiling point, preventing vapor lock in high-temperature conditions. 3. Brake fluid undergoes minimal quality changes and does not cause corrosion to metal or rubber.

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