Duh. Antifreeze wants nothing to do with freezing (or boiling for that matter). Adding antifreeze to the water in your radiator (a 50/50 mix is recommended) lowers the freezing temperature of the water, which helps prevent freezing in cold weather. After all, you want to keep your engine cool, not frigid.
Antifreeze can also protect that same water from boiling in the heat (hence its other name, coolant), but the name “antifreezeandboil” was a bit cumbersome.
Think you’ve seen it all? Well hold onto your hats because this overachiever even prevents corrosion and provides lubrication for the water pump.
