At what sub-zero temperature does antifreeze freeze?

[LaRosalie]

Antifreeze freezes at temperatures below minus thirty-five degrees Celsius. The steps for replacing antifreeze are: 1. Open the vehicle's engine hood, and locate the antifreeze reservoir in the upper right corner; 2. Open the antifreeze drain plug under the radiator to drain the old antifreeze; 3. Add new antifreeze, tighten the cap, and the antifreeze replacement is complete. The functions of antifreeze are: 1. To provide anti-corrosion protection for the engine's cooling system; 2. To prevent the engine water from boiling when the temperature reaches 100 degrees Celsius; 3. To prevent scale formation, avoiding reduced radiator efficiency; 4. To ensure the engine operates normally under low temperatures.