The small holes in the brake disc are often referred to as heat vents or ventilation holes. These small holes have the effect of increasing friction and improving heat dissipation, especially when driving at high speed or braking, the brake disc will be affected by greater heat.
Through these holes, air flows better through the brake discs, helping to dissipate heat, improving the dissipation of the dissipation, reducing the likelihood of overheating the brake system, and helping to prevent the brake discs from deforming or losing braking performance due to overheating.
After talking about brake discs, let's briefly talk about brake fluid, brake fluid is an oily medium used by the braking system to transmit and amplify braking force. It is distributed in oil storage pots, oil pipes, brake master cylinders, ABS pumps, and brake sub-cylinders, and works under high temperature and high pressure for a long time.
Brake fluid absorbs water easily, which lowers the boiling point. Generally, in 2 years or 40,000 kilometers, the water content will exceed 3%, and the friction heat of the brake elements will cause the water in the brake oil to boil and produce air resistance, and the braking will be soft, the braking distance will be extended, and even the brake will fail. In addition, long-term use of brake fluid will cause turbidity and emulsified sediment, which will reduce the efficiency of braking force transmission. Replacement standard: The brake fluid must be replaced when the water content is greater than 3%.
It is necessary not only to drive steadily, but also to be able to "brake", regularly check and change the brake fluid, not only to change the oil, but also to upgrade the braking performance of the vehicle, after all, safety first. I hope this article will be helpful to you in the process of using and maintaining a car. Car maintenance Big mark car maintenance