What is Car Coolant?

Published Date: 16th Jun 2023

Modern car coolant, also known as antifreeze or engine coolant, is a specially formulated liquid that helps to keep your engine running at the right temperature. It is typically a mixture of water, ethylene glycol, propylene glycol, and additives to enhance its performance.

The primary function of coolant is to absorb and transfer heat away from the engine. As the engine runs, it generates significant heat, which can reach extreme temperatures. The coolant circulates within the engine, absorbing heat from the engine components, and carries it to the radiator. The heat is dissipated in the radiator into the surrounding air, and the cooled coolant returns to the engine to repeat the process.

In addition to its cooling properties, modern car coolant also serves several other important functions. It helps to prevent the formation of rust, corrosion, and mineral deposits within the engine and cooling system. Coolants also contain additives that lubricate the water pump and seals, ensuring smooth operation and preventing leaks.

Find 73 Plate New Car Deals Here

Moreover, modern car coolants are designed to withstand freezing temperatures, hence the term "antifreeze." They have a lower freezing point than plain water, protecting engine block and radiator damage caused by the expansion of freezing water.

To maintain its effectiveness, it is essential to regularly check and replace the coolant according to the manufacturer's recommendations. This helps ensure proper engine cooling, prevent overheating, and prolong the lifespan of the engine and cooling system components.

How Does a Car Coolant Work?

Car coolant, also known as antifreeze, is a specially formulated liquid that helps to keep your car's engine running at the right temperature. It is typically a mixture of water, ethylene glycol, propylene glycol, and additives to enhance its performance.

The primary function of coolant is to absorb and transfer heat away from the engine. As the engine runs, it generates significant heat, which can reach extreme temperatures. The coolant cycles through the engine, absorbing heat from the components, and carries it to the radiator. The heat is dissipated in the radiator into the surrounding air, and the cooled coolant returns to the engine to repeat the process.

In addition to its cooling properties, car coolant serves several other important functions. It helps to prevent the formation of rust, corrosion, and mineral deposits within the engine and cooling system. Coolants also contain additives that lubricate the water pump and seals, ensuring smooth operation and preventing leaks.

Moreover, car coolants are designed to withstand freezing temperatures, hence the term "antifreeze." They have a lower freezing point than plain water, protecting engine block and radiator damage caused by the expansion of freezing water.

To maintain its effectiveness, it is essential to regularly check and replace the coolant according to the manufacturer's recommendations. This helps ensure proper engine cooling, prevent overheating, and prolong the lifespan of the engine and cooling system components.

Here are some of the benefits of using car coolant:

Image of the Word Cool

Prevents engine overheating: Car coolant helps to keep the engine at a constant temperature, which prevents overheating and damage to the engine.
Prevents rust and corrosion: Car coolant helps to prevent rust and corrosion in the engine and cooling system.
Extends the life of the engine and cooling system: Car coolant helps to extend the life of the engine and cooling system by preventing overheating, rust, and corrosion.

If you are unsure what type of coolant to use for your car, it is always best to consult your vehicle owner's manual. You will also find this information at your local Halfords.

Different Types of Car Coolant

Water: This is the simplest type of coolant and is often used in older cars. It is inexpensive and easy to find, but it does not have the same corrosion protection as other types of coolant.
Antifreeze: This is a mixture of water and glycol, a type of alcohol. Antifreeze protects the engine from freezing in cold weather and boiling in hot weather. It is also more effective at preventing corrosion than water.
Extended-life coolant: This type of coolant is designed to last for up to 5 years or 150,000 miles. It is more expensive than traditional coolant but can save you money in the long run by reducing the need to change it more often.
Organic acid coolant: This coolant is made from a different glycol type than traditional coolant. It is less corrosive than conventional coolant and is also biodegradable.

The type of coolant you use will depend on your car's make and model, as well as the climate you live in. If you are unsure what coolant to use, consult your car's owner's manual.

Here are some additional tips for using car coolant:

Always use the type of coolant recommended by your car's manufacturer.
Check the coolant level regularly and add more coolant as needed.
Flush the coolant system every two years or 30,000 miles, whichever comes first.
Dispose of used coolant properly.

Why Is a Car Coolant Important?

Car coolant is a vital component of your car's engine. Its main job is to regulate the engine's temperature by absorbing heat and dissipating it away. Without coolant, the engine would become too hot and suffer severe damage. In addition to temperature control, coolant plays a crucial role in preventing corrosion within the engine. It contains special additives shielding metal parts from rust and other harmful effects. Regularly checking the coolant level and topping up if necessary is crucial for maintaining your car's well-being. Additionally, replacing the coolant periodically, every two years or after covering 30,000 miles, whichever comes first, is advisable. This ensures your engine stays cool and functions like a well-oiled machine.

Following these straightforward guidelines can help keep your car's engine cool and avoid expensive repairs. So remember, taking care of your car's coolant is a small yet significant step towards running your vehicle smoothly.

How Often Should a Car Coolant Be Replaced?

The frequency of coolant replacement depends on several factors, including the type of coolant used, the vehicle manufacturer's recommendations, and the driving conditions.

Type of coolant: There are two main versions of coolant: traditional coolant and extended-life coolant. Conventional coolant should be replaced every two years or 30,000 miles, whichever comes first. Extended-life coolant can last up to 5 years or 150,000 miles, but it is essential to check your vehicle's owner's manual for specific recommendations.
Vehicle manufacturer's recommendations: The vehicle manufacturer may have specific guidelines for coolant replacement based on the type of coolant and the engine design. It is always a good idea to consult your vehicle's owner's manual for specific recommendations.
Driving conditions: If you drive in extreme conditions, such as very hot or cold weather, you may need to replace your coolant more frequently.

Indications that it's time to replace your coolant.

Coolant level is low: An inadequate coolant level usually points to a loss of coolant from either leakage or evaporation, ultimately resulting in engine overheating and damage.
Coolant is discoloured: Discoloured or cloudy coolant may indicate contamination, making it less effective at protecting the engine. Hence, it is recommended to change the contaminated coolant to ensure optimal engine performance.
Coolant contains debris: If you see debris floating in the coolant, it is a sign that the coolant system is not working correctly. This could lead to engine overheating and damage.

How to Replace Your Car's Coolant

Coolant replacement is a relatively easy task that can be done at home with the right tools and supplies.

Here are the basic steps involved:

Image of Car Engine Oil being Changed

Park your car on level ground.
Allow the engine to cool down.
Locate the coolant reservoir.
Remove the cap from the coolant reservoir.
Add fresh coolant to the reservoir until it reaches the "full" mark.
Replace the cap on the coolant reservoir.

It is crucial to choose the appropriate coolant type per the vehicle manufacturer's recommendation, which can be found in the owner's manual. Following this guideline will ensure the optimum performance and longevity of your vehicle.

To keep your car's cooling system in top shape, be sure to follow the recommended coolant replacement schedule and inspect the coolant regularly. This will help optimise the performance and longevity, saving you time and money in the long run.

How to Prolong the Life of Your Car's Coolant

Coolant is essential for keeping your car's engine running at a safe temperature. It helps to absorb heat and transfer it away from the engine, preventing it from overheating. Over time, coolant can break down and become less effective. To keep your car's coolant in perfect condition, follow these essential steps:

Check the coolant level regularly: Park your car on level ground and allow the engine to cool down. Locate the coolant reservoir and check if the level is between the minimum and maximum marks. If it's low, add a 50/50 mixture of coolant and water to reach the appropriate level.
Inspect for leaks: Periodically examine the coolant system for any signs of leakage, such as puddles under the car or visible drips. Leaks can lead to coolant loss, which can cause engine overheating. If you notice any leaks, have them repaired promptly.
Change the coolant as recommended: Coolant loses its effectiveness over time, so following the manufacturer's guidelines for coolant replacement is crucial. Generally, the coolant should be changed every two years or after covering a specific mileage, such as 30,000 miles.
Use the correct coolant: Ensure you use the coolant recommended by the car manufacturer. Different vehicles may require specific types of coolant, such as ethylene glycol or propylene glycol-based ones. Using the wrong coolant can lead to compatibility issues and damage to the engine.
Keep the coolant system clean: Over time, deposits and contaminants may accumulate in your vehicle's coolant system, impairing its effectiveness. Flushing the coolant system periodically can effectively remove these problematic agents and bolster its efficiency. It is a proactive maintenance task that we recommend getting done by a professional.

By following these maintenance practices, you can prolong the life of your car's coolant, ensuring that it stays in perfect condition and effectively protects your engine from overheating and corrosion.

Additional tips:

If you live in a cold climate, you may need to use a different type of coolant designed to prevent freezing.
If you drive in dusty or dirty conditions, you may need to flush the coolant system more frequently.
If you need clarification on your car's coolant, consult your car's owner's manual or a qualified mechanic.

Coolant is a vital component of any car engine and requires proper maintenance to function at its best. This article provides helpful tips to ensure your vehicle's coolant stays in good condition, safeguarding against engine overheating and damage risks.

Here are some of the key takeaways:

Use the correct coolant for your car. Check your car's owner's manual to see what type of coolant is recommended.
It's important to check your coolant level regularly and ensure it sits between the minimum and maximum marks on the reservoir. A well-maintained coolant level is key to keeping your vehicle running smoothly.
If the coolant level is low, make sure to add a 50/50 mixture of coolant and water.
Replace the coolant every two years or 30,000 miles, whichever comes first.
Inspect the coolant system for leaks and debris regularly.
Have any coolant leaks repaired immediately.
Flush the coolant system every two years or 30,000 miles, whichever comes first.

By following these tips, you can help to keep your car's coolant in good condition and protect your engine from overheating and damage.

Find Amazing New Car Deals Here

Discover your perfect car with the guidance of our team of expert sales professionals. From start to finish, we'll work with you to find the ideal vehicle to match your needs. Contact UK Car Discount today and explore our wide selection of premier vehicles.

Call us today at 0161 946 3500 to discuss how we can guide you with your next Next New Car.