During this time of year, you may hear many people talk about getting a car winter safety inspection done to their vehicles. People will be concerned about fluid checks, engine repair, and other aspects of general car maintenance. You will hear terms such as viscosity and cold-cranking amps. You will even hear all kinds of advice given from people who will give you their picks of mechanics, engine oil, and even antifreeze. Antifreeze may be one of those things that you never gave serious thought until now. Just what is the purpose of antifreeze anyway?
Antifreeze – What is it?
Antifreeze is a liquid that has ethylene glycol, a toxic substance for humans and animals, as the active ingredient. It is formulated with anti-corrosion and lubricating substances, and water. It lowers the freezing point, raises the boiling point of the liquid, and is usually bright green in color. Another form is made with a nontoxic substance, propylene glycol and it is usually red in color. Both coolants contain the same anti-corrosion ingredients. These additives protect the radiator by coating the interior of the engine, hoses, pipes, and radiator. The lubricating ingredients help provide a seal around the water pump. Antifreeze is usually sold in a one-gallon plastic container. Some formulas require that you mix with water while others can be used immediately from the bottle. The prices vary depending on which type of antifreeze you go with, but the ready-to-use name brands are at the top of the high price spectrum.
Where does it go?
Coolants are dispensed in the radiator. The coolant passes through the engine and absorbs the heat. This hot coolant travels through hoses into the inlet tank of the radiator and distributed throughout the radiator core. As it circulates through the tubes on its way out to the opposite tank, the liquid cools as the heat is transferred from the liquid to the tubes, and then from the tubes to the fins that are located between each row of tubes. The heat is dissipated via the fins to the outside air. Then the cooled fluid flows back through to the engine to repeat the process. Your owner’s manual will give you instructions on how to put coolant in your car. If you are not comfortable doing it yourself, you can have your mechanic to do it for you.
What Purpose Does it Serve?
The cooling system keeps the fluid from freezing in the winter, especially in the northern and eastern states where the temperature can tumble below zero. A mixture of one part antifreeze to one part water is normally used in cars. The fluid will not freeze when the temperature dips and it will provide coolness to the engine to keep it from overheating. A low level of antifreeze in the car is one of the most common causes of overheating. Coolants also act as a lubricant by protecting the radiator. The additives also include a detergent that helps to keep the radiator clean. It will keep dirt, grime, and corrosion from accumulating. If your coolant level is too low, your radiator could become clogged with dirt or develop rust or calcium buildup. You should check with your owner’s manual to determine if your car requires any brand or formulation that is unique for your car. Make sure that your coolant levels are checked when you are having your fluid checks and winter safety inspection done.