At what moisture content does brake fluid need to be replaced?

1 Answers
VonLaila
07/29/25 6:41pm
Brake fluid needs to be replaced when its moisture content reaches 3%. It is an important fluid in the braking system and requires regular replacement. If the moisture content in the brake fluid is too high, it can lead to reduced braking force and extended braking distance, which affects the vehicle's driving stability and safety. After replacing the brake fluid, it is essential to bleed the air from the brake system lines; otherwise, it can also affect braking force and distance. Brake fluid, also known as hydraulic brake fluid, is the liquid medium used in hydraulic braking systems to transmit braking pressure, making it an indispensable part of the braking system. Based on type, brake fluid can be categorized into castor oil alcohol-based, synthetic, and mineral oil-based varieties.
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