Can Expired Brake Fluid Be Used?

1 Answers
KendraLee
07/30/25 12:59am
No. Brake fluid has hygroscopic properties, which can lead to lowered boiling points, contamination, and varying degrees of oxidation and deterioration. Prolonged failure to replace it may corrode the braking system, creating potential driving hazards. It is recommended to replace the brake fluid every two years or 40,000 kilometers. Whenever possible, purchase products from manufacturers that consistently supply brake fluid to automotive factories to ensure reliable quality and stable performance. Professional equipment should ideally be used for replacement to achieve a more thorough process. Pay attention to braking symptoms: 1. Weak braking: This is usually caused by a loss of pressure in the transmission pipeline that provides pressure. Check for cracks or looseness at the interface between the vacuum booster hose of the brake master cylinder and the engine. 2. Brake shudder: This mostly occurs in older vehicles that have been driven for many years. Due to significant wear, the surface flatness of the brake discs has deviated to some extent. The issue can be resolved by resurfacing the brake discs or replacing them entirely.
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