What is the normal freezing point of antifreeze?

[ThomasMarie]

Antifreeze normally has freezing points of -15°C, -25°C, -30°C, and -40°C. How to choose antifreeze: The basic indicators of antifreeze are the freezing point and boiling point. In the market, antifreeze comes in several specifications with freezing points of -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. Can different antifreeze brands be mixed? It is necessary to use the same brand of antifreeze. Different brands of antifreeze may have varying production formulas. If mixed, multiple additives may react chemically, rendering them ineffective. How to check if antifreeze is low: Observe the antifreeze warning light on the dashboard. If it lights up, it may indicate low antifreeze levels, though it could also be due to excessively high engine temperature. 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 antifreeze level should normally be between the maximum and minimum marks. If the antifreeze is below the minimum mark, it indicates a deficiency.