The requirements of the brake oil have good viscosity-temperature performance, can work in a wide and low temperature, with good oxidation stability, anti-foam, anti-rubber expansion, anti-rust and so on. Brake oil is an important product related to traffic safety. Quality brake oil, both to ensure that the vehicle is not damaged, but also to ensure that occupants in the event of an emergency situation when the personal safety, and poor brake oil is called "traffic killer." The two most important indicators of brake oil are high temperature resistance to air resistance and kinematic viscosity.
High temperature resistance to gas resistance, including the equilibrium boiling point and wet boiling point of two indicators, respectively, control the high temperature boiling point of the brake oil and water infiltration after the wet boiling point. The braking force of the car is transmitted through the brake oil, so the presence of air resistance in the brake oil will cause the braking force transmission to lag or even fail. Kinematic viscosity is the brake oil in high temperature or low temperature climate conditions are required to have the appropriate viscosity requirements. It specifies the viscosity of the brake oil at -40 ° C, 50 ° C and 100 ° C. Failure to meet the requirements may result in wear or damage to the brake system.