How Often Should BMW Coolant Be Replaced?

1 Answers
LeCaroline
07/29/25 6:49pm
BMW coolant should generally be replaced every two years or every 40,000 kilometers. Properly replacing the car coolant can provide better protection while driving. When replacing, the old fluid should be completely drained, the cooling system thoroughly cleaned, and then new fluid added. It is recommended to have this done at a professional 4S shop. Precautions for using car coolant: 1. Use coolant year-round: It is important to use coolant consistently throughout the year. Many car owners only think of using coolant in winter, which is a mistake. They focus only on the antifreeze function of coolant and overlook its anti-corrosion, anti-boiling, and anti-scaling effects. 2. Choose coolant based on the environment: Car owners should select coolant with different freezing points according to their daily driving environment. The freezing point of the coolant should be at least 10°C lower than the lowest temperature in the area to avoid losing its antifreeze effect and affecting normal vehicle use. 3. Do not mix coolants: When adding car antifreeze, coolants of different brands and properties should not be mixed to prevent chemical reactions that could compromise their overall anti-corrosion capabilities. Leftover coolant should be labeled on the container to avoid mistakes during use. 4. Understand the properties of coolant: Car owners should understand the properties of the coolant when purchasing. If buying concentrated coolant, such as ethylene glycol-based concentrated coolant, they can add an appropriate amount of pure water in proportion to prepare coolant suitable for the local temperature conditions.
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