## How Car Engine Coolant Works
The Importance of Engine Coolant
Engine coolant, also known as antifreeze, is a vital fluid in any car. It helps to keep the engine running at the proper temperature by absorbing heat from the engine and dissipating it through the radiator. Without coolant, the engine would overheat and seize up.
How Coolant Works
Coolant is a mixture of water and ethylene glycol. Ethylene glycol is a non-toxic, organic compound that lowers the freezing point of water and raises its boiling point. This makes coolant ideal for use in cars, as it can prevent the engine from freezing in cold weather and overheating in hot weather.
Coolant also contains a variety of additives that help to protect the engine from corrosion and scale buildup. These additives include:
* **Inhibitors:** Inhibitors prevent the formation of rust and corrosion on metal surfaces in the engine.
* **Surfactants:** Surfactants help to keep coolant circulating properly and prevent it from forming deposits.
* **Lubricants:** Lubricants help to reduce friction between moving parts in the engine.
Types of Coolant
There are two main types of coolant: inorganic and organic. Inorganic coolant, also known as traditional coolant, is made with silicates and phosphates. Organic coolant, also known as extended-life coolant, is made with organic acids.
Inorganic coolant typically has a green or blue color, while organic coolant typically has a red or orange color. Organic coolant lasts longer than inorganic coolant and provides better protection against corrosion and scale buildup.
When to Change Coolant
Coolant should be changed every 30,000 to 50,000 miles, or according to the manufacturer’s recommendations. Over time, coolant can become contaminated with dirt, debris, and other contaminants. This can reduce its effectiveness and lead to engine problems.
How to Change Coolant
Changing coolant is a relatively simple process. Here are the steps:
1. Allow the engine to cool down completely.
2. Locate the radiator drain plug and open it.
3. Allow the coolant to drain out into a drain pan.
4. Close the radiator drain plug.
5. Fill the radiator with new coolant.
6. Run the engine for a few minutes to circulate the coolant.
7. Check the coolant level and add more if necessary.
Conclusion
Engine coolant is a vital fluid that helps to keep your car running properly. By following the tips in this article, you can help to ensure that your coolant system is working properly and that your engine is protected from damage.
