What is brake fluid made of?

1 Answers
Griffin
07/30/25 8:06am
Brake fluid is a synthetic oil composed of various additives, categorized into three types: DOT3, DOT4, and DOT5.1. Below are some relevant details about brake fluid: 1. Replacement interval: It is recommended to replace the car's brake fluid every two years. 2. Precautions: If the vehicle experiences inconsistent braking performance during normal driving, the brake fluid should be replaced promptly. Before replacement, clean the braking system with alcohol. During seasonal changes, especially in winter, if a decline in braking effectiveness is noticed, it may be due to the brake fluid's grade not being suitable for winter conditions. In such cases, when replacing the brake fluid, opt for a type with lower viscosity at low temperatures.
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