Proper engine temperature makes a vehicle's cooling system one of the most crucial systems for proper engine operation and protection.
Your vehicle cooling system's primary job is to keep coolant moving through the engine so it can absorb and dissipate heat. if your radiator becomes blocked over time or cracked due to heat damage, it can develop leaks and simply not have the ability to efficiently cool your engine. Over time your cooling system can also develop acids, rust, and metal particles from the metal parts of the system.
Proper checks and maintenance of your cooling system seasonally can help to avoid expensive repairs as well as the possibility of being stranded due to the system failing.