Can Red and Green Antifreeze Be Mixed?

1 Answers
LeCaroline
07/29/25 5:23pm
Mixing red and green antifreeze in a car is not recommended. Different colored antifreeze may have variations in chemical properties and compositions. Even if the main components are the same, the secondary components and formulation ratios can differ. Mixing them can lead to chemical reactions, causing hazards such as sedimentation, scaling, and corrosion, which can affect the engine's lifespan. How to choose antifreeze: The basic indicators of antifreeze are its freezing point and boiling point. On the market, antifreeze is available in freezing points such as -15°C, -25°C, -30°C, and -40°C. Generally, it is advisable to choose one that is at least 10°C lower than the lowest temperature in your region. How to check if antifreeze is low: Observe the antifreeze warning light on the dashboard. If it lights up, it is likely due to low antifreeze levels, though it could also be caused by excessively high cylinder temperatures. Check the antifreeze reservoir. If the fluid level is below the minimum mark (MIN), do not continue driving and add antifreeze promptly. Check the water level markings on the antifreeze tank. The normal antifreeze level should be between the maximum and minimum marks. If it is below the minimum mark, it indicates a shortage of antifreeze.
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