Cooling system

An efficient cooling system, therefore, requires several things: an adequate supply of coolant, an efficient heat exchanger, a fan to pull air through the radiator at low speeds, a water pump to keep the coolant moving, and a thermostat to regulate the operating temperature of the engine for good performance, fuel economy and emissions. The coolant must also have the right mix of water and antifreeze to provide adequate freezing and boiling protection, and the proper amount of corrosion inhibitors to protect against rust, oxidation and electrolysis.

To keep the cooling system in good operating condition, it’s important to check the level, strength and condition of the coolant on a regular basis - and to replace or recycle the coolant before the protective additives are entirely depleted.

According to the U.S. Department of Transportation, cooling system failure is the leading cause of mechanical breakdowns on the highway. And according to numerous aftermarket surveys that have been performed over the years, coolant neglect is one of the leading causes of cooling system breakdowns.