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WHAT IS A COOLANT? Engine creates a lot of energy and heat while the car is moving. It is the job of the exhaust and cooling system to make sure the engine stays cool. The coolant absorbs the heat from the engine and stops the engine water from boiling in the summer.A coolant is a special heat transfer fluid substance that is used to regulate the temperature of engines and machines. It is also known as antifreeze, which has mostly ethylene glycol or propylene as the main ingredient. Coolant is g …

How Often Should I change Coolant?Regular maintenance is key to engine performance, efficiency, reliability and longevity. Knowing when to change coolant, engine oil, transmission fluid and brake fluid, among other adjustments, will help you get the most out of your vehicle.Even in the most efficient internal combustion engines, little of the explosive energy of the fuel is converted to motive power to get you down the road. The rest of the fuel’s chemical energy is lost as heat. Some heat is go …