What is the freezing point of coolant typically measured at?

The freezing point of coolant is often designed to be significantly lower than the freezing point of water to ensure optimal performance in harsh conditions. Coolants are formulated using antifreeze compounds, primarily ethylene glycol or propylene glycol, which can lower the freezing point dramatically compared to plain water.

A typical balance of coolant allows it to remain in a liquid state even at extremely low temperatures, usually reaching around -60 degrees Fahrenheit. This is essential because it prevents the coolant from freezing, which could lead to engine damage or overheating during operation. The other options represent temperatures where water would freeze, but they are not suitable for the operating conditions of many engines that require coolant to function effectively over a wide range of temperatures.