Is It Serious If Brake Fluid Is Not Changed for 6 Years?

1 Answers
HaleyLee
07/30/25 6:42am
Not changing the brake fluid for 6 years will have negative effects. Generally, brake fluid should be replaced every 3 years or 50,000 kilometers. Below are the specific impacts of long-term failure to change brake fluid: 1. Corrosion of the braking system. Brake fluid itself is hydrophilic and prone to absorbing water. If not changed for a long time, the brake fluid can corrode the braking system, posing significant safety risks. 2. Formation of brake vapor lock. After absorbing water, the boiling point of brake fluid decreases, which can easily lead to insufficient braking pressure and affect braking performance. When the temperature rises to the boiling point, the water inside the brake fluid will boil, generating a large number of bubbles. 3. Clogging of the brake system. Prolonged failure to change the brake fluid can cause deposits and impurities in the brake lines to result in brake system malfunctions, affecting braking performance.
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