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What oil can be used as a substitute for disc brake oil?

1 Answers

DelAugust

07/30/25 7:49am

Electric vehicle brake oil cannot be used as a substitute. Brake oil is a type of brake fluid that requires a high boiling point, such as 200 degrees Celsius. Water cannot reach such a high boiling point. A boiling point that is too low can lead to vapor lock. In cold weather, the freezing point should be low, ensuring good fluidity at low temperatures. This is also understandable. If all the properties are fixed, it cannot serve the function of fluid transmission. Below are the specific effects of not replacing brake oil for a long time: Corrosion of the braking system: Brake oil itself is hygroscopic and prone to absorbing water. If not replaced for a long time, the brake oil can corrode the braking system, posing significant safety hazards. Formation of brake vapor lock: After absorbing water, the boiling point of brake oil decreases, which can easily lead to insufficient brake pressure and affect braking performance. When the temperature rises to the boiling point, the water inside the brake oil will boil and produce a large number of bubbles. Clogging of the brake system: If brake oil is not replaced for a long time, deposits and impurities in the brake lines can cause brake system malfunctions, affecting braking performance.

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