There are several different varieties of engine coolant these days, often indicated by color. As an alternative, additives can be added to the existing coolant which help restore it’s original effectiveness. After the flush process is complete, fresh coolant fluid is placed into the cleaned system. Normally this is accomplished by a coolant flush.Ī coolant flush involves the old fluid being flushed from the system, cleaning deposits and clearing corrosion and possible contaminates. It is estimated that 30-40% of engine downtime is a result of an improperly functioning or damaged cooling system, so it is very important to keep the system maintained. Another problem is corrosion – mixing metal and liquid normally results in corrosion taking place, so the coolant also must be formulated to resist it. With this in mind, modern cooling systems utilize a mixture of water and “anti-freeze” – normally a type of alcohol that allows the mixture to remain liquid below freezing temperatures. When water freezes it expands in volume, and if used as a coolant can rupture and damage vital engine parts – a very expensive problem to say the least.
However, water freezes at low temperatures, which is very problematic in a mechanical environment. Long ago, water was seen as sufficient means to cool an engine. The removal of heat is accomplished by a coolant flush-circulating coolant fluid through the engine, which is then passed through the radiator where the heat it carries is transferred to the air moving through the radiator. If this heat is not removed adequately and is allowed to build up, it can spell disaster for your engine. Removing excess heat from your engine is the one and only job of the cooling system. Keeping your car cool in the winter time sounds like a contradiction, but no matter how cold the temperature is outside, your engine feels the heat while it’s running.
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