Does Brake Fluid Have an Expiration Date?

[SanBrianna]

Brake fluid has an expiration period of approximately 3 years if unopened, and about 1 year if opened but properly sealed. Additional Information: Important Notes: Expired brake fluid must not be used: Expired brake fluid is strictly prohibited from use. It may undergo emulsification and deterioration, producing air bubbles that accumulate in the brake lines and cannot be released, forming air resistance. This affects the normal transmission of hydraulic pressure, leading to poor braking performance or even failure. Reason: Excessive water content mixed into the brake fluid can also impact its quality. Similarly, water directly lowers the boiling point of the brake fluid. When water enters the brake fluid, its ability to resist vapor lock is significantly reduced, directly affecting the low-temperature fluidity of the brake fluid.