What can result from the failure to change coolant regularly?

Failing to change coolant regularly can lead to the buildup of contaminants and degradation of the coolant's properties over time. This deterioration can create an environment conducive to corrosion within the cooling system, particularly affecting the radiator and engine components. The coolant is designed to inhibit rust and scaling, but as it ages, its effectiveness diminishes. Consequently, metals such as aluminum, iron, or copper can corrode, leading to leaks, overheating, and possibly severe engine damage. Therefore, regular coolant changes are crucial for maintaining the integrity of both the radiator and the engine components, which directly ties to the performance and longevity of the vehicle.