Your car’s cooling system circulates coolant through the engine to keep it cool. The vehicle’s coolant is also circulated through the radiator, radiator hoses, water pump, and heater core. Your cooling system should be flushed at least every 30,000 miles or two years. Over time, the antifreeze product loses its properties. It degrades in its quality, making the coolant acidic. As a result, it causes general corrosion in your engine, radiator hoses, and radiator. Flushing the coolant will save you money by extending the life of your radiator, hoses, water pump, and heater core.