How often should the brake fluid be replaced for an Audi A6L?

1 Answers
VanAyla
07/30/25 12:06am
Audi A6L brake fluid should be replaced every 40,000 kilometers or 2 years. Brake fluid, also known as hydraulic brake fluid, functions to transmit pressure within the vehicle's braking system, enabling the wheel braking system to perform braking actions. The reasons for replacing brake fluid are: 1. Moisture or impurities from the air can enter through the vent hole of the reservoir, lowering the boiling point of the brake fluid; 2. During prolonged braking while driving, the brake lines are prone to vapor lock, resulting in reduced braking force or brake failure. The characteristics of brake fluid are: 1. Low freezing point: maintains good fluidity in low-temperature conditions; 2. Extremely high boiling point: does not cause vapor lock in high-temperature conditions; 3. Minimal quality changes: does not corrode or soften metals and rubber.
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