Your Radiator, Fans, Water Pump and Cooling system is vital to your vehicle and improper care can lead to very costly repairs. An engine that is overheating will quickly self-destruct, so proper maintenance of the cooling system is very important to the life of the engine and the trouble free operation of the cooling system in general.
One of the most important maintenance your vehicle needs is to flush coolant periodically. The reason for this important service is that antifreeze has a number of additives that are designed to prevent corrosion in the cooling system. Corrosion tends to accelerate when different types of metal interact with each other, this corrosion causes scale and build up that clogs the thin flat tubes in the radiator and heater core causing the engine to eventually overheat. Anti-corrosion chemicals in the antifreeze prevents this, but they have a limited life span.