Updated at: 12-08-2022 - By: Lucas

Maintaining an engine is essential to extending its lifespan. Keep your fluid levels in check as part of routine maintenance. One of the simplest components of maintenance is adding coolant. However, how do you properly add coolant? Let’s talk about how to properly apply antifreeze and why you’d want to do so in the first place.

What Is Antifreeze?

How To Put Coolant In Car

Your engine’s cooling system relies on antifreeze or coolant, which is a type of liquid. It’s responsible for keeping the engine at its ideal operating temperature. Make sure your engine is working properly and performing at its best by doing this. Antifreeze keeps your engine running in the hottest summers and the coldest winters.

If you don’t have antifreeze in your engine, it’s likely that it won’t be able to function properly. It won’t be effective, and it won’t reach its full potential. There’s a chance it may all go down in flames.

What Is Antifreeze Made Out Of?

A water-based antifreeze is used. As an antifreeze, some people may even use water as a substitute. Water is sometimes used as antifreeze by some people. The engine’s temperature can be controlled by adding water to avoid it from overheating. It can cool the system, but it can also corrode the system. In other words, is it OK to use water as a substitute for antifreeze?

You can use it in an emergency, but if you intend to use it on a daily basis, it’s not a good idea.

Water freezes at low temperatures, which is an issue. Coolant that has solidified and been frozen will not be able to flow. As a result, drinking water in cold weather is not a smart idea. As a result, we prefer water-based coolants. Most of it is water. However, some compounds are added to protect it from becoming rock-solid.

Addition of ethylene glycol or polyproline glycol or Methanol or a comparable substance prevents the water from freezing. As a result, the water will remain liquid and yet be capable of absorbing heat from the engine.

How Does Antifreeze Work?

The coolant is stored in the radiator, which is located on top of the engine. As a result, the engine is surrounded by it. In the engine, the water is pumped by a water pump and circulates back to the radiator.

The radiator is where the coolant begins its journey. It is pumped using water jackets, which are hollow structures for pumping water. The engine is protected by these water jackets.

The engine’s heat is absorbed by the coolant, which returns to the radiator. The radiator’s tiny tubes carry the hot coolant. It is cooled by the movement of air. The coolant temperature immediately decreases and the engine is ready for another loop.

As long as you’re behind the wheel, you’ll be subjected to this process. The engine’s crankshaft often powers the water pump.

Why Do You Need Antifreeze?

How To Put Coolant In Car-2

Water pump removal is a common practice among drag racers. If so, you may be questioning, “Why can’t you?” if they’re driving without coolant.

Drag racers are known for their penchant for traveling small distances very quickly. A race can be called off in under a minute. Because of this, their engine will not overheat as quickly. Even in drag racing, engine failures are regular. But water pump failure is extremely unusual.

They remove the water pump in order to boost the vehicle’s horsepower. The crankshaft drives the water pump. Reduced output on the wheels is caused when the engine’s water pump takes power from the motor. They get a few extra horsepower by removing the water pump, which might mean the difference between first and second.

You can’t do that with your regular driver. Because you’ll be behind the wheel for a long time, this is a factor. As a result, the engine will overheat to dangerous levels. And if you’re not racing, 10 additional horsepower won’t make much of a difference. As a result, you should never operate a vehicle without coolant.

Functions Of Antifreeze

Antifreeze’s principal function is to keep your engine from overheating. There are numerous metal parts in the engine, as you know. Components made of metal rub against one other as the engine runs. As a result, a tremendous amount of heat builds up.

190 to 210 degrees Fahrenheit is the ideal temperature for an engine to operate at. Temperatures are hovering about 74 degrees Fahrenheit at this point. Your engine will perform optimally at this temperature. It’s a sign that your engine is overheating when the temperature reaches 230 degrees Fahrenheit. An overheated engine poses a wide range of dangers.

Your engine will overheat if you don’t have coolant to lower the temperature, which will happen if you don’t use it. Antifreeze is needed for this very reason. Metal components in the engine heat up when the coolant travels around them. This keeps the engine from overheating by dissipating heat.

Antifreeze has a few other advantages besides just keeping things cool. All of these benefits can be achieved by using antifreeze in your vehicle. Antifreeze also helps reduce air pollution by keeping your engine’s temperature stable.

How To Put Coolant In A Car

How To Put Coolant In Car-3

Coolant may be added to an automobile in a matter of minutes. Regardless of how inexperienced you are with autos, everyone can accomplish it. It doesn’t matter if you are simply re-filling your coolant or if you are having your coolant flushed.

Choosing the right coolant is the first step.

Types Of Coolant

The use of the same coolant in all vehicles would have been more convenient. It’s not, unfortunately. Coolant recommendations vary from maker to manufacturer. Manufacturing processes for coolant have evolved over time.

There are a variety of antifreeze brands and names to choose from when you go to the store. In the market, there are several types of coolants available. As a result, there are many different types of additive technology: organic acid technology, organic acid technology, hybrid acid technology, phosphate-free hybrid organic acid technology, phosphorus-containing hybrid organic acid technology

These three are the most common antifreezes.

Inorganic Additive Technology

Ethylene glycol, phosphates, and silicates are used in the manufacturing of this cooling agent. Green is a common color for this. There are several different types of coolants out there.

This is a great way to keep rust at bay. However, it is thought to be ineffective at clearing out junk from the system. This is due to the fact that some of the more recent coolants are particularly effective in removing debris from the system.

Inorganic Additive Technology is also rendered obsolete by the short lifespan of its components. About 24,000 miles or 24 months is the typical lifespan of this coolant. This is a short shelf life in the context of newer brands.

Organic Acid Technology

Propylene glycol is the primary ingredient in this product. To make it stand out from other liquids, it has been tinted orange.

General Motors and Volkswagon both utilize this sort of coolant. As opposed to Inorganic Additive Technology, this type has a much longer shelf life Only after 50, 000 miles do vehicles that employ this formula need to be replaced.

Hybrid Organic Acid Technology

In the end, we’ve arrived at a hybrid organic acid technique. Organic acid and silicates are used in the production of this product. Yellow, pink, blue, or orange are just a few examples of the many hues that could be used for this. Because of this, the yellow coolant is more usually seen.

It is an excellent corrosion-preventative fluid because of its silicate content. There are many varieties of this type as well. Recall discussing Phosphate Free Hybrid Organic Acid Technology and Phosphated Hybrid Organic Additive Technology. HOA Technology is used to make these products.

One of the most common forms of coolant on the market. Ford, Chrysler, and the vast majority of European automakers all make use of these.

The oil needs to be changed every 50, 000 miles or so on this one as well. In some cases, the manufacturer recommends a different replacement interval. It’s imperative that you do as the manufacturer instructs.

How To Find Out Which Type Of Coolant You Should Use?

A trip to the dealership is the greatest option for determining which coolant is right for your vehicle and how much it will cost. They’ll recommend a coolant that’s compatible with your specific vehicle. This is going to be dead on. There’s no need to stress about picking the wrong coolant.

There’s also the option of consulting the product’s owner’s manual. If this was the case, the coolant used would also have been specified. Go to the store and get exactly the right coolant this time.

Choosing the right coolant can be a difficulty in and of itself, though. In this scenario, you shouldn’t rely on color. You shouldn’t use yellow coolant again just because you used yellow coolant before. Colored coolants, as you may have noticed, are available. There are a variety of colors used by various manufacturers. There are many different types of coolant out there, so you’ll need to do some research before making a purchase.

The internet is the final method for determining what kind of coolant to use in your vehicle. As long as you acquire your information from the right source, it will be correct.

How To Add Antifreeze To Your Car?

With this information, we can begin the process of putting antifreeze to your vehicle. Finding the appropriate antifreeze is the most difficult component of this process. It’s as easy as putting a toy in your automobile.

Step 1

To begin, shut off your engine. Keep your car in a safe location and make sure the parking brake is activated.

Wait for the engine to come to a stop. It’s never a good idea to work on a hot engine. Injuries could be a factor, as well. The engine will be extremely hot to the touch. Putting your hand on anything could result in a burn.

Other from the fact that you’ll be distracted by the heat, running a hot engine will result in blunders.

Before performing any repairs, allow the engine to cool for at least 15 minutes. There is no other option when it comes to replacing antifreeze. An engine’s radiator cap is among the most scorching parts of the machine. Wait until the engine has cooled down.

Step 2

This step is all about finding where to find the coolant reservoir. Since it’s a large part that’s supposed to be easily accessible, this should be simple. What to do if you can’t find it immediately away.

An enormous white tank is the reservoir. It usually has a yellow cover to match the rest of the container. It also has a caution sign stating that it should not be touched when the engine is hot.

Searching is easy if you know what you’re looking for.

Step 3

Before adding more coolant, be sure to check the current level. The coolant reservoir is transparent, which makes it easy to see what’s inside. As a result, the coolant level can be easily checked. One glance should reveal whether or not you need to add coolant.

No worries if you don’t know what level is best. The minimum and maximum levels are marked with lines on the tank’s exterior. You don’t even have to open the cap to monitor the fluid levels if you use a clear container and a brightly colored liquid.

Step 4

To determine if your reservoir needs to be refilled or not, you must know how much coolant is left in the tank. Make sure to remove the reservoir cover safely if you think you need to top it off. Don’t grab it unless you know it’s not hot. As you remove the cap, be careful not to damage it.

Pour the antifreeze into the container using a funnel. As long as you keep it in the reservoir, you don’t need it anywhere. Refill as needed.

Step 5

Finally, put the cap back on and you’re done. Be sure to secure the cap firmly. For safety reasons, you don’t want any gasses entering or exiting from the reservoir.

How To Flush The Coolant?

First, flush your coolant if you want to use a fresh antifreeze in your entire cooling system. You can do this on your own, despite the fact that it may appear to be a difficult task. Only one additional step separates this method from the one we looked at previously. Before adding the new coolant, you must drain the old one.

Draining The Coolant

Wait until the engine has cooled down fully, as stated in the first step. Using a jack, raise the front tires to ease the procedure. You’ll have more area to work beneath your car now, which will make things go more smoothly.

Crawl beneath the radiator and locate the drainage valve. Make sure to check the region underneath the radiator if you’re having difficulties finding it. If you’re replenishing fluid, make sure you have a large enough container to collect it in. Let the water drain out of the tank.

This step is necessary for a complete flush. Close the radiator drain valve after you’ve drained the old fluid. You’ll see that the coolant reservoir is now completely empty when you look inside the device. Clean water should be used. After that, turn on the engine and let it run for at least 15 minutes.

As a result, the complete cooling system will be flushed of any remaining old coolant. Repeat the operation and drain the water that you poured in. Afterwards, Drainage valves can be closed once you’ve removed all of the waste from your system.

It’s now possible to replicate the process of re-filling your vehicle’s coolant tank.

When Do You Need To Add Antifreeze?

Checking your antifreeze level is the easiest method to tell if you need to buy more. Open the hood and check your fluid levels on a regular basis. Checking the antifreeze level isn’t too difficult, though. To see what’s inside, all you have to do is pop the hood.

Even if you don’t monitor your fluid levels on a regular basis, you can still be on the lookout for a few telltale indications.

The first symptom is an engine that is overheated. This does not imply that you must monitor the engine’s temperature while driving. This light will come on if the engine overheats. In addition, the temperature of the engine is displayed. Consequently, if one of these lights comes on, you should check your antifreeze levels and refill it as needed.


Adding coolant to a car is frequently asked, therefore we’ve put together this list of frequently asked questions.

How Often Do You Need To Flush Your Coolant?

The routine maintenance of a car includes flushing and replenishing the coolant. Coolant flushing is advised every 2 years or every 30 000 miles, whichever comes first. It’s a good habit to get into the habit of doing something even if you don’t have to.

What Are The Benefits Of Flushing Coolant?

Dirty coolant will accumulate over time. It will eventually lose its ability to function as a result of the waste it collects. The cooling system will run more smoothly if you do a coolant flush. Remove the unclean coolant to avoid damaging your radiator with dangerous deposits and scales.

Using a new coolant protects your engine against corrosion. If you drive 30,000 miles a year, cleansing your cooling system is a good idea.

How Much Will It Cost To Flush Your Coolant?

This is one of the most cost-effective ways to keep your car in good working order. Even if you aren’t great with tools, this is a simple job that you should do on your own. You won’t have to pay more than $50 even if you hire an expert. You can save a significant amount of money by doing this yourself.

Do You Need To Maintain The Coolant Level Full At All Times?

You don’t have to maintain your coolant tank full at all times. To keep your engine from overheating, you only need a little more than half of what’s in your reservoir.

At the very least, you should keep it at least one-third filled. Overheating will be avoided with this precaution.

Are Antifreeze And Coolant The Same?

Antifreeze and coolant are often used interchangeably. While the two are very similar, there is a minor variation. Glycol-based antifreeze is a highly concentrated liquid. This substance is combined with others that have positive effects on the motor. Before using this mixture, it must be diluted with water. It can be used as a coolant by diluting it.

When it comes to antifreeze dilution, however, coolant is a mixture of antifreeze and water. Antifreeze and water have been mixed together to create this solution.

Is It Okay To Add Coolant When The Engine Is Hot?

Adding coolant while the engine is still hot may cause damage to your vehicle.

You won’t have to worry about your engine being harmed. As for your own protection, this is not the case.

At 210 degrees Fahrenheit, the radiator cover heats up. It is quite dangerous to remove the cap at this temperature. You’ll be blasted with steam from the cooling reservoir, besides the starting temperature. It’s like having a pressure cooker in the tank while the engine is hot.

A few minutes of patient waiting will pay off in the long run.


Antifreeze is the primary fluid in your engine that aids in heat dissipation. Metal parts rub against metal when an engine is running. The engine can be damaged by the friction that is created. That’s not going to happen thanks to your coolant.

You must check your coolant level on a frequent basis to ensure the health of your engine. Make sure to top off the coolant if you see it getting low.

It’s not difficult to top off your vehicle’s coolant reservoir. Isn’t it time-consuming? You don’t need a lot of it. As a result, never run low on antifreeze in your vehicle. Now that you know how to properly apply antifreeze to a car, you no longer have to fear the thought of having to refill the coolant.