What does DOT mean for brake fluid?

1 Answers
ColemanAnn
07/30/25 8:27am
DOT is the minimum boiling point standard data, a specification grade stipulated by U.S. automotive safety standards. Here is additional information: 1. Definition of brake fluid: Automotive brake fluid, also known as hydraulic brake fluid, is the liquid used to transmit pressure in automotive hydraulic braking systems. It is a crucial product related to traffic safety. Brake fluid is made from refined diesel distillates with thickeners and antioxidants added. There are three types: mineral oil brake fluid, alcohol-based brake fluid, and synthetic brake fluid. 2. Braking working pressure of brake fluid: The braking working pressure of brake fluid is generally 2MPa. All liquids have the characteristic of being incompressible. In a sealed container or a pipeline filled with liquid, when the liquid is subjected to pressure, it quickly and uniformly transmits the pressure to all parts of the liquid. Hydraulic braking works based on this principle. After being used for a certain period, brake fluid tends to have a lowered boiling point, become contaminated, and undergo varying degrees of oxidation and deterioration.
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