Best Antifreeze and Engine Coolants 2021: Reviews & Buyer’s Guide

Post by 
Tom Schaffer
Last updated on 
December 16, 2020
1. Engine Ice
  • Ready to use
  • Performance right out of the bottle
  • Formulated with Propylene Glycol
2. Valvoline
  • Provides long-life protection
  • Protects the cooling system against freezing and overheating by keeping it clean
  • Helps extend the life of vehicles
3. Zerex
  • Prevent rust and corrosion
  • Provides superior cooling system protection
  • For light-duty & heavy duty vehicles

Most modern automobiles come with powerful engines that can stretch the boundaries of performance. This is largely because they are able to run at constant levels of high power. A good quality coolant is often the unsung hero, which stands behind the consistent performance of a high powered engine. Most car owners should know that the coolant you buy, goes a long way in determining your car's performance in the long run.

In this article, we plan to give you a comprehensive review of engine coolants, so that you can go out there and get the right one for your particular automobile variant. Hopefully, by the end of this article, you will be able to find the best engine coolant out there in the market. We will start off by giving you a list of the best engine coolants that we have come across in our extensive searches. Following this, we have a separate section where we will discuss some of the most important factors to keep in mind while buying an engine coolant.

We have laboured hard to bring this information to you, as we have consulted with various industry experts and searched the length and breadth of the market for the right kind of car care products, which will give you good value for your money.

Top 8 Best Anitfreeze and Engine Coolants 2021

1. Engine Ice TYDS008 High-Performance Coolant

Engine Ice TYDS008 High-Performance Coolant Best Engine Coolants

We start off our list of the best coolants for high-performance engines with the Engine Ice TYDS008 High-Performance Coolant. This is a high quality, biodegradable, phosphate-free coolant, that has served a lot of automobile owners very well. It is totally free from any kind of toxic substances and generally manages to reduce the operating temperatures. It manages to prevent your overall engine temperature from boiling over to 256 degrees Fahrenheit and also provides anti-freeze protection up to a temperature low of -26 degrees Fahrenheit.

This product is ideal for various types of performance-oriented vehicles, including racing cars, as well as a wide variety of other automobiles, such as snow vehicles or ATVs. If you use the

Engine Ice TYDS008 High-Performance Coolant on a consistent basis, you will surely get a 10 to 20-degree average reduction in operating temperature, which will undoubtedly extend the lifespan of your automobile.

This product has full legal backing in the case of CCS and ASRA road racing and is also permitted for usage at numerous tracks all over the world. It has been premixed with deionized water, so that you can use it easily out of the bottle without any issues whatsoever. The Engine Ice TYDS008 High-Performance Coolant is available in a variety of different categories in terms of sizes, and you can get the one that suits your required usage.

Engine Ice has also been streamlined to be perfectly safe for usage with aluminum and a host of other metals. It maintains a reasonable temperature, so that excess heat does not result in the loss of performance and stability of the automobile. It makes use of propylene glycol - which has been proven through numerous tests to be capable of removing water pump gaskets, as well as seal failures. The most impressive thing about this product is that it has shown to be very effective in high load situations to keep a cap on temperature increase.

On the basis of all the evidence that we have had, the Engine Ice TYDS008 High-Performance Coolant is a very good coolant, and we have no qualms in recommending it to you.


2. Valvoline Multi-Vehicle 50/50 Antifreeze/Coolant

Valvoline Multi-Vehicle 50/50 Antifreeze/Coolant

The Valvoline Multi-Vehicle 50/50 Prediluted Ready-to-Use Antifreeze/Coolant is our second product on the list. We are also proud to introduce two back to back five star rated products on the list from two different brands. Valvoline is a well-known brand in the automobile accessories field, and it has managed to build up a very positive reputation over the years, owing to the quality of its products.

The Valvoline Multi-Vehicle 50/50 Prediluted Ready-to-Use Antifreeze/Coolant has been proven to extend the lifespan of various types of vehicles, by keeping a firm hold on the temperature inside the engine room. The ‘cool’ thing about this coolant, is that it is ready for optimum usage in all types of different climates and driving conditions. This makes it a very good product to use on a daily basis. The Maxlife Valvoline is ideal for giving solid protection to your internal engine components for a long and extended time period.

It comes with a unique patented formulation that has the highest quality anti-corrosion inhibitors as well as anti-scaling chemistry technology. It manages to give high-quality protection to the cooling system of your engine, by preventing issues related to overheating as well as freezing - while also keeping it clean. Another fantastic aspect of this coolant is that it is compatible with various antifreeze compounds - if you are looking to use a mixed solution.

We have consulted many different users of this product, and we have received a majority of highly positive reviews and encouraging feedback. Based on our customer interviews and online rating analysis, we can say that it is in the conversation for the throne of the best antifreeze in the industry at this moment in time.


3. Zerex Original Green Antifreeze/Coolant

Zerex Original Green Antifreeze Coolant

The Zerex Original Green Antifreeze/Coolant comes in to take third place in our list of the best coolants for engines that you can find in the market. We have started the list with a bang with two five star rated products, and we are following it up with another five-star antifreeze coolant that has been equally well regarded by users and experts alike. The Zerex Original Green Antifreeze/Coolant is known to provide protection from antifreeze for up to temperatures as low as -34 degree Fahrenheit.

Apart from being a superb coolant and antifreeze solution, it also manages to provide additional protection against issues caused due to rust and corrosion. This is possible, thanks to the specially designed and patented organic corrosion inhibitor package, that actively promotes a better quality of overall protection standards. Furthermore, it also comes with around 30 – 50 ppm of denatonium benzoate as a bittering agent.

In our minds, this product is best suited for vehicles that recommend or specify a traditional green coolant. This makes it a very good cooling option for passenger vehicles, along with heavy-duty as well as light-duty vehicles. The low silicate chemistry formula is ideal for heavy-duty application, with the help of SCA.

The ethyl alcohol solution is enough for most vehicles and can help you extend the lifespan of your engine if you use it correctly. For all of these reasons, we can say that this product is considered to be one of the best, if not the best engine coolant currently available at this price range.


4. EVANS Cooling Systems EC53001

EVANS Cooling Systems EC53001

We have reached the halfway mark in this list of the most impressive engine coolants currently available. The EVANS Cooling Systems EC53001 High-Performance Waterless Engine Coolant is one of the best coolants we have on this list, in terms of flexibility of usage. It is perfectly suitable for all types of modern, vintage, as well as classic gasoline-powered vehicles. It also works really well with other vehicle types, such as light-duty diesel, LP, and CNG vehicles.

This coolant has a really high boiling point of 375 degrees Fahrenheit. It manages to completely eradicate issues surrounding boilover situations, as well as after-boil problems - which can hamper your automobile’s performance long term. Additionally, it also manages to generate low vapor pressure and reduces the pressure on your engine cooling system to a large extent.

You will also be pleased to know that this coolant solution does not contain any water. This means that you will not have to worry about any kind of corrosive effects, which are often a problem for many water-based coolant solutions. Not only that, but it also minimizes the issues surrounding electrolysis. All of this ends up significantly reducing your overall maintenance costs in the long run, and equips your automobile for a longer lifespan.

Overheating could cause a number of serious issues, such as pre-ignition and engine knock, and the EVANS Cooling Systems EC53001 High-Performance Waterless Engine Coolant guards against these problems vigilantly. This results in a greater degree of combustion efficiency, which allows your engine to deliver more power to the vehicle and also give you good prospects for much better fuel economy.

Before you use the product, make sure to remove all old water-based coolants, as well as any kind of water on the surface. We are convinced that this coolant has all the elements that make it worth a purchase - and you should get it as soon as you can.


5. ShellZone Pre-Diluted 50/50 Antifreeze/Engine Coolant

ShellZone Pre-Diluted 50/50 Antifreeze/Engine Coolant

The ShellZone Pre-Diluted 50/50 Antifreeze/Engine Coolant is the fifth product on our list and it's another impressive coolant, which has been used by many old-school vehicle enthusiasts for some time. This one is a perfect example of a good quality 50/50 premix coolant solution that performs all of the basic functions with the greatest sincerity. A high-quality ethylene glycol-based antifreeze that is resistant to rust and corrosion, the ShellZone Pre-Diluted 50/50 Antifreeze/Engine Coolant is a very flexible product in this price range.

In terms of compatibility, this is a perfect choice for multiple car owners, as it is so easily usable with literally any car or vehicle that you may currently own. An ideal low silicate antifreeze, this one can be used with many different makes and models without issue. However, it might not be compatible with a few of the car models - so make sure to check that before buying. Lastly, it is remarkably inexpensive and is the perfect choice for individuals who are always topping up their coolant reservoirs on a frequent basis.


6. Zerex Heavy Duty Extended Life Antifreeze/Coolant

Zerex Heavy Duty Extended Life Antifreeze/Coolant

The Zerex Heavy Duty Extended Life Antifreeze/Coolant is our next item on the list, and it follows up from our last product quite nicely. Just like the previous coolant, this one is also a 50/50 mixture coolant solution, that is capable of giving you a very good cooling experience at an affordable budget. It is primarily designed for heavy-duty diesel engines. It manages to last for a long period of time, before needing replacement - and this is one of its major achievements.

Apart from trucks and cars, this coolant also works really well with other diesel oriented machines and applications. This makes it incredibly versatile, and therefore capable of multiple usages. Make sure to note that it is not suitable for cars running on gasoline, and is hence limited to diesel-only vehicles. It gives effective long term protection to engines from liner pitting and hard water scale deposits. This ends up increasing the overall lifespan of the engine in the long run. Based on all of these factors, we can safely say that it can be considered to be the best coolant for diesel-only cars and machine applications.


7. K-SEAL Coolant Leak Repair

K-SEAL Coolant Leak Repair

Engine coolants are a necessity if you own a car or any other vehicle, as these keep the radiator from overheating when it’s too hot, and keeps it from freezing when the weather is too cold. You require an engine coolant that does this job well enough for the car to function properly during extreme weather conditions. K-Seal’s coolant is designed to prevent any damage in your car due to freezing or overheating.

It can repair the problem within minutes, and the liquid is specially formulated to weld radiators once and for all. It can also weld any block in your car or hard plastic aluminum heads as well. You will not find another coolant that has been tested to meet the ASTM D3147. While it can find holes and cracks in the engine and repairs them effectively, it has no harmful effect on the efficiency of the engine.

This coolant is extremely easy and convenient to use; all you have to do is follow a few simple steps. Remember to shake the coolant bottle well before pouring it, then pour it into the radiator and start the engine. It’s as simple as that. The K-Seal coolant formula is composed of microfiber particles that can repair holes as big as 0.635 mm. The microfibers result in a permanent seal of cracks and holes that will never get damaged again.

Once you pour in the coolant and it seals the leak, the external environment, along with the combustion gases inside the engine and the heat, helps in permanently sealing the leak. The formula has been scientifically tested to be safe and effective. However, you need to identify the problem or leak quickly for the coolant to have any effect, otherwise, the damage will require fixing that will cost a lot of money. With this affordable and easy-to-use engine coolant, your engine will remain forever protected from unwanted and harmful leaks.


8. Recochem OEM 86-184BOEMH Blue Antifreeze

Recochem OEM 86-184BOEMH Blue Antifreeze

The Recochem OEM Blue Antifreeze, or coolant, is yet another great engine coolant that will provide you with top-quality performance and efficiency - so that leaks and cracks in your car are instantly healed. This coolant has been specially designed and is applicable for newer models of foreign cars, and even light-duty trucks. It is highly recommended for cars like Acura, Honda, Infiniti, Mitsubishi, Nissan, Subaru, Suzuki, and Mazda.

This engine coolant is great for high-temperature aluminum protection, and it also protects the engine from corrosion, rust as well as pitting that happens as a result of the cavitation of coolant system metals. The coolant is safe, and works efficiently, resulting in the best performance. Other than these features, the Recochem coolant is also the most inexpensive and affordable coolant that you will find in the automotive market today - which is overcrowded with similar products, but being sold at higher rates.

You can trust this coolant to protect your engine, something that you rely on for your car to function properly, from extreme weather conditions, and the leaks and cracks that it can cause. You might require a coolant as a preventive measure, or when there is an emergency as the damage has already happened; whatever be the case, this particular brand of engine coolant will become your savior in all these situations.

What makes the coolant completely safe and trustworthy, is the bitterant that is added to the formula during its manufacturing. It comes with 5 years of service protection or 150,000 miles - which is the recommended change interval. Bring home this highly efficient coolant and see it work its magic on your car.


Factors To Consider While Buying A Good Engine Coolant

As we have already mentioned before, buying an engine coolant maybe a little trickier than you would imagine - especially for first-time buyers who don't know a lot about the subject. So in this section, we will cover some of the important elements that you should keep in mind while scanning for the right kind of engine coolant.

The reason for using a separate coolant for your automobile is to ensure that the engine does not run too hot, and ensures a longer and healthier life for your car in general.

Generally, antifreeze coolants offer a mixture of glycol chemicals, along with water if it is not a pre-mixed product. Underneath, we have outlined some crucial elements that you should be wary of while buying your engine coolant

1. Compatibility Of Coolant

The first and foremost criteria while buying a coolant are rather straightforward, and most of you should ideally be aware of this already. You need to make sure that the coolant you are looking to buy is compatible with the engine of your automobile. This is often overlooked, as there is a misconception that all engine coolants are compatible with all engines - regardless of differences. This is not the case. Also, under ideal circumstances, the new coolant you are looking to buy should match the color of the old coolant in the engine. Make sure to refer to your vehicle's user manual to get a good idea about this, and to get specific coolant recommendations, so that you can use your coolant in peace.

2. Boiling And Freezing Points

The boiling and freezing points of a coolant are another important marker to be aware of. It is used to determine the maximum and minimum temperatures, under which the coolant will be able to function at optimum capacity. Safe to say, that you should always try and find a coolant that has a high boiling and freezing point. This ensures that you have much more headway and room for maneuverability of usage, and the coolant will be a lot more flexible in this scenario as well.

3. Anti Corrosion Features

A lot of the brass and aluminum-based engine parts suffer corrosion over time, and this becomes a genuine problem for car owners. This is one of the main reasons for using a good quality engine coolant - it is capable of giving you adequate protection against the corrosive effects of usage over time.

FAQs on Antifreeze Engine Coolants

1. What Are The Different Types Of Coolants?

There are mainly three types of varieties when it comes to coolants, and we will talk about them briefly. The first type uses Inorganic Acid Technology (IAT), and the two other types are Organic Acid Technology - which is the most common, and Hybrid Organic Acid Technology (HOAT).

2. Is It Ok To Mix Engine Coolants?

It is generally believed to be unwise to mix different kinds of engine coolants from different brands. Often, this can lead to unforeseen issues and result in maintenance bills in the form of expensive repairs. If you end up mixing two different coolants that should not be mixed together, it can result in a jelly-like substance that is thick in texture and not suitable for managing temperatures. This can ultimately lead to issues regarding overheating and defeat the entire purpose of using an engine coolant for your vehicle in the first place.

3. Can You Drive With Low Coolant?

In our experience, it is never advisable to drive your car with low coolant, especially over longer distances and time. The coolant is responsible for keeping a lid on the temperature inside your hood, as it can get heated very quickly. The mixture of air and fuel inside the engine produces a lot of heat, and this can cause issues, if not mitigated with the help of a good coolant. So, make sure not to push your vehicle too hard, in case you are running on a low coolant if you wish to spare some serious damage to your engine.

4. What Happens If You Overfill Coolant?

The use of the coolant should always be undertaken with the utmost care, as overfilling the engine with coolant could result in serious damage over time. The coolant will begin to expand as it heats up, but if you put too much in, it will have nowhere to go. This might result in a situation where the excess coolant expands and pours over into other components inside the hood and this is a big no-no! As you must be aware, the hood has a lot of electrical and wiring related components that drive the engine - so any kind of liquid spreading on these components could signal a death knell for your car’s engine.

5. Should The Coolant Reservoir Be Full?

The coolant reservoir is one of the most crucial components inside the hood, and it is responsible for the overall cooling process to a large extent. It basically performs the vital function of storing the excess coolant fluid, until the time it is required. As a general rule of thumb, make sure that your coolant reservoir is at 30 percent capacity when the engine is off. It is very common for car engines to heat up excessively because of a leak in the coolant reservoir hose - so be sure to be vigilant against that as well.

6. How Do I Know When To Change My Coolant?

This is a good question and one that we get a lot, as it is important to keep in mind. If your engine feels as though it is no longer slippery, then it might be time for you to replace or add another dose of your coolant. Coolants come with various kinds of lubrication additives that manage to reduce the effect of corrosion. However, as time passes and the coolant gets older, these properties gradually tend to disappear or be less evident.


In this article today, we have tried to give you a comprehensive perspective on all things related to engine coolants. We recognize that buying an engine coolant may prove to be tricky for a lot of people who are not well versed in these matters, and who are new to vehicle accessory products. For this reason, we have tried to keep things relatively simple and straightforward in this article, so that you don’t get burdened with too much technical detail.

We began this article with a short intro, followed by a section where we explained what an engine coolant is, and why it is important for you to have one, in order to cater to the best maintenance standards for your personal vehicle. We then proceeded to move on to a list of some of the best coolant products that our experts have come across in the market.

Keep in mind, that we have consulted a lot of long term users of these products, and we have also made it a point to take online reviews and ratings into consideration while making the decision of putting a product on the list. Hopefully, you will find the right coolant for your needs and requirements from our list of the best coolant brands. We have also given you some pointers on which factors you should take into consideration while deciding on which coolant to purchase.

Keep in mind that you can always do further research if you think it is required before making a final choice. We hope you find the best engine coolant for your purposes, and we wish you the best in your endeavors.

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