What is the normal freezing point of antifreeze?

[McKaylee]

Antifreeze in the market comes in several specifications with freezing points such as -15°C, -25°C, -30°C, -40°C, etc. Generally, it is advisable to choose one that is at least 10°C lower than the lowest temperature in your region. Here is more information about antifreeze: Conditions to determine if antifreeze is insufficient: Observe the antifreeze warning light on the dashboard. If it lights up, it is likely due to insufficient antifreeze, although 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; add antifreeze promptly. Check the water level scale on the antifreeze bottle. The normal antifreeze level should be between the maximum and minimum marks. Whether antifreeze is lacking depends on the scale. If the antifreeze is below the minimum mark, it indicates a deficiency. Antifreeze replacement cycle: For vehicles that operate for long periods, such as taxis, high-quality antifreeze should generally be replaced once a year. For vehicles with shorter operating times, replacement can be every two years or every 30,000 kilometers. To prevent excessive foam formation, which reduces the heat exchange efficiency between antifreeze and engine components, ensure the product is within its validity period when adding. Long-life antifreeze can last up to three years. If suspended particles, sediment, or signs of deterioration or discoloration are found in the antifreeze, replace it promptly and clean the system.