How Often Should Brake Fluid Be Changed in a BMW 3 Series?

1 Answers
Keegan
07/29/25 6:50am
BMW 3 Series requires brake fluid change every 40,000 kilometers. Introduction to Brake Fluid: Automotive brake fluid is the liquid used in hydraulic braking systems. It effectively lubricates the moving parts of the braking system, extending the service life of brake wheel cylinders and rubber cups. It is non-corrosive to both metallic and non-metallic materials in the braking system. It adapts to various environments, ensuring flexible transmission of braking force under conditions such as high temperatures, extreme cold, high speeds, and humidity. It also serves to transmit energy and dissipate heat. Precautions for Changing Brake Fluid: Do not allow impurities to mix into the brake fluid. During the use of brake fluid, avoid mixing gasoline, diesel, engine oil, or windshield washer fluid into the brake fluid, as this can significantly impair braking performance.
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