How to Determine When to Replace Brake Fluid?

[LeLogan]

Determining whether brake fluid needs replacement is typically done by measuring its water content. Generally, brake fluid should be replaced every two years, as it is crucial for the proper functioning of a vehicle's braking system. Methods to determine if brake fluid needs replacement are as follows: 1. Water content testing pen: Insert the testing pen into the brake fluid reservoir. If the water content exceeds 3%, the brake fluid should be replaced. 2. Duration of operation: Studies show that for a new car, after 12 months of operation, the water content in brake fluid is about 2%; after 18 months, it can reach 3%; and after five years or more, the water content can be as high as 7-8%. It is recommended to replace the brake fluid if the water content exceeds 3%.