Is Brake Fluid Moisture Content Testing a Scam?

[DelMatthew]

Under normal circumstances, the moisture content in brake fluid is below 1%. If it is too high, it will lower the boiling point of the brake fluid, causing the fluid to boil and vaporize during high-intensity braking, leading to brake failure. When the water content in the brake fluid reaches 3%, the boiling point of the brake fluid will decrease by 25%. If the moisture content reaches 7-8%, the boiling point of the brake fluid will drop by more than 50%. Here are some details about brake fluid: Introduction to Brake Fluid: Brake fluid is also known as hydraulic brake fluid. The moisture content in brake fluid has a specific limit, and when it exceeds this limit, the brake fluid must be replaced promptly. Brake fluid naturally absorbs moisture, and water from the air can seep into the brake fluid reservoir through the vent hole. Over time, this can cause the moisture content in the brake fluid to exceed safe levels. Functions of Brake Fluid: It effectively lubricates the moving parts of the braking system, extending the service life of brake calipers and rubber seals.