Can red and green antifreeze be mixed for use?

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Red and green automotive antifreeze cannot be mixed for use. Different colored antifreeze may have variations in chemical properties and compositions. Even if the primary ingredients are the same, the secondary components and formulation ratios can differ. Mixing them can easily trigger chemical reactions, leading to hazards such as sedimentation, scaling, and corrosion, which may affect the engine's lifespan. Methods for selecting antifreeze: The fundamental indicators of antifreeze are its freezing and boiling points. On the market, antifreeze is available in freezing point specifications such as -15°C, -25°C, -30°C, and -40°C. Generally, it is advisable to choose an antifreeze with a freezing point at least 10°C lower than the lowest temperature in your region. Methods to determine 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 triggered by excessively high cylinder temperatures. Check the antifreeze reservoir. If the fluid level is below the minimum mark (MIN), do not continue driving and promptly add antifreeze. Inspect the water level scale markings on the antifreeze tank. The normal antifreeze level should be between the maximum and minimum water level marks. To determine if antifreeze is low, check the scale. If the antifreeze level is below the minimum mark, it indicates a deficiency.