Can Red Antifreeze and Green Antifreeze Be Mixed?

[McMia]

Green antifreeze and red antifreeze should not be mixed. Antifreeze of different colors 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 lead to chemical reactions, causing hazards such as sedimentation, scaling, and corrosion, which may affect the engine's lifespan. How to choose antifreeze: The basic indicators for antifreeze are its freezing and boiling points. Market-available antifreeze comes in specifications such as -15°C, -25°C, -30°C, and -40°C freezing points. It is generally advisable to choose an antifreeze with a freezing point at least 10°C lower than the lowest temperature in your region. How to determine if antifreeze is low: Check the antifreeze warning light on the dashboard. If it lights up, it likely indicates low antifreeze levels, though it could also be due to excessively high engine temperatures. Inspect 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 the antifreeze is below the minimum mark, it indicates a deficiency.