If you want to keep your vehicle running smoothly during the summer months, you’ll need to use the right coolant. In this article we will review several incredible products to help you find the best radiator coolant for hot weather.
Our top choice is the Zerex G05 Antifreeze Coolant, which offers a versatile design that offers year round protection. It contains nitrates that prevent damage to the liners of your engine cylinders. This coolant is also formulated to protect against deposits and scale that develop from hard water.
Before you decide which coolant to buy for your vehicle, you’ll want to learn about each of the products below.
How We Picked The Best Radiator for Hot Weather
When we put together our best radiator coolant for hot weather list, there were a few important things we focused on. The first thing we looked at was each coolant’s ability to protect against corrosion and other damage. This is a crucial factor to keep in mind if you want to get your money’s worth.
We also took a look at the boiling point of each coolant, as this determines just how effective they really are. It is best to find a coolant that also serves as antifreeze. This will give you comprehensive year round protection for your vehicle.
A Spotlight On Some of The Best Radiator Coolant for Hot Weather 2022:
 | STAR BRITE Star-Cool Premium Synthetic PG Engine Coolant | ||
 | Engine Ice TYDS008 High Performance Coolant | ||
 | Zerex G05 Phosphate Free 50/50 Antifreeze/Coolant | ||
 | PEAK PXAB53 Antifreeze Coolant | ||
 | ACDelco DEX-COOL 50/50 Pre-Mix Engine Coolant |
STAR BRITE Star-Cool Premium Synthetic PG Engine Coolant
The STAR BRITE Star-Cool Engine Coolant is formulated to keep your vehicle operating at maximum horsepower. It is capable of lowering running temperatures extremely fast.
One of the most impressive things about this coolant is that it can actually seal pinhole leaks as well as fissures. This helps with keeping your vehicle running smoothly on a consistent basis. It uses a non-toxic formula that doesn’t contain any ethylene glycol whatsoever.
You’ll find that the all-season protection that it offers will give you year round protection. It keeps your vehicle safe from boilover up to an astonishing 265 degrees Fahrenheit. It also prevents freeze up to -26 degrees Fahrenheit.
The advanced synthetic formula of this coolant also prevents corrosion of your water pump, which can save you a lot of money. It does a great job of keeping your radiator unclogged as well.
You can travel up to 250,000 miles with a gasoline engine vehicle, or 750,000 miles if you have a diesel engine. This is an impressive service life to say the least.
When you use this coolant in your vehicle, it instantly establishes a barrier that prevents corrosion. It comes mixed with de-ionized water, so you can simply pour it into your cooling system. The versatile formula of this product is one reason that we included it in our best radiator coolant for hot weather list.
Pros:
- Comes ready to use (just pour and go)
- Formulated to help you maintain optimal horsepower
- Prevents issues with water pump corrosion
- Non-toxic formula is safe for all different types of metals
- Can be used all year round for maximum versatility
Cons:
- Some customers complain about the price being a bit too high
Engine Ice TYDS008 High Performance Coolant
The Engine Ice TYDS008 High Performance Coolant has an eco-friendly biodegradable, non-toxic formula. It limits boil over temperatures to maximum of 256 degrees Fahrenheit. You’ll have freeze protection up to negative 26 degrees Fahrenheit as well.
You can expect this coolant to reduce the running temperature of your vehicle by around 10 degrees Fahrenheit. This makes it an ideal choice for racing. It’s also perfect for motorcycles and all-terrain vehicles.
We were very impressed by this coolant’s ability to consistently keep temperatures down. It can be in contact with aluminum and just about any other type of metal with no issues whatsoever.
The propylene glycol that it uses will help with reducing the chances of seal and pump gasket failures. It continues to work well even under high stress circumstances.
We also like the fact that this coolant is mixed with deo-ionized water, so it is all ready to use. Just pour it in and it will start working. This type of formula prevents any impurities that could potentially damage the cooling system in your vehicle.
If you are looking for the best radiator coolant for hot weather, this product offers reliable performance on a consistent basis. You can always count on it to keep your vehicle running cool and smoothly during the summer months.
You’ll find that Engine Ice YDS008 can also prevent corrosion, which is a leading cause of cooling system failure. This is especially beneficial if you have an older vehicle. You can count on this coolant to provide you with the power necessary to dominate in races or just drive on the open road.
Pros:
- Biodegradable formula is very eco-friendly
- Prevents corrosion in your cooling system over time
- Consistently reduces running temperature by at least 10 degrees Fahrenheit
- Works well even under high stress circumstances
- Compatible with aluminum, steel, copper, and other metals
Cons:
- Containers are a bit small
Zerex G05 Phosphate Free 50/50 Antifreeze/Coolant
The Zerex G05 Antifreeze Coolant has a versatile formula that works well in diesel and gasoline engine vehicles. It does not contain any phosphates whatsoever. We also like that it can be used to prevent corrosion with a variety of metals, ranging from copper to aluminum.
There are certain additives in this coolant that prevent scale and deposits from hard water. This ultimately helps to keep your vehicle running smoothly every single day. It also does a great job of keeping the cylinder liners in your engine working perfectly. You won’t have to worry about them succumbing to cavitation.
The defoamer system prevents any damage to plastic components in your vehicles, such as hoses. It won’t cause any wear with original finishes either.
One of the reasons we chose this product for our best radiator coolant for hot weather is its well-balanced formula. You’ll find that it offers the best of older and newer technologies.
When you use this coolant with your vehicle, you won’t have to worry about any rust or liner pitting. It can be combined with many other coolants as well. It offers boilover protection up to 265 degrees Fahrenheit, and freeze protection to an impressive -34 degrees Fahrenheit.
If you are trying to find an effective and versatile coolant for your vehicle, the Zerex G05 is a great solution. You can always count on it to perform well through even the hottest temperatures throughout each summer.
Pros:
- Contains defoamer that won’t damage plastic components
- Reduced pH formula is compatible with all different metals
- Special additives prevent deposits and scale caused by hard water
- Ready to use (no need to add water)
- Protects against extremely hot and cold temperatures
Cons:
- Packaging could use some improvement
PEAK PXAB53 Antifreeze Coolant
The PEAK PXAB53 Antifreeze Coolant offers comprehensive protection for a variety of vehicles. It contains special inhibitors that reduce the likelihood of rust with impressive effectiveness.
You can trust this coolant to work for the entire life of your vehicle. Whether it is a sedan, truck, SUV, or even ATV, it will work well over the long term. It is compatible with vehicles from all over the world, including Asian and European countries.
The silicate-free formula of this coolant means that you won’t have to worry about damage to the internal components of your vehicle. It comes ready to pour, so there is absolutely no need to mix with water.
We were very impressed by the solid protection that this coolant offers. It has a boiling point of 224 degrees Fahrenheit, and a freezing point of -34 degrees Fahrenheit.
The long term protection that this product offers makes it one of the best radiator coolant for hot weather options available. It is compatible with all different color antifreeze, range from green to fuchsia.
This coolant works well year round, as it protects against extreme cold and heat. You can therefore rely on it to prevent all sorts of damage, some of which can be extremely costly to have fixed. It is a great overall investment that can potentially save you a lot of time, money, and aggravation.
Pros:
- Versatile formula makes it compatible with vehicles from all over the world
- Offers effective year round protection against cold and hot temperatures
- Can be combined with all different color antifreezes
- Protects against corrosion over the entire life of your vehicle
- Does not require any dilution (read to pour)
Cons:
- Refilling can be somewhat of an inconvenience
ACDelco DEX-COOL 50/50 Pre-Mix Engine Coolant
The ACDelco DEX-COOL is formulated for long lasting use. In fact, you can as much as five years of use, which translates to approximately 150k miles. It can be stored for up to eight years, which is significantly longer than most other coolant products.
This coolant will prevent corrosion with iron, brass, steel, copper, and other metals. It does not contain any silica, which means superb heat transfer that you can always count on. It can actually extend the life of your vehicle’s water pump.
The carboxylate technology makes this coolant perfect for newer vehicles with a hybrid design. You’ll find that it can actually improve the overall efficiency of these vehicles.
It offers year round protection against extremely high and low temperatures. You can therefore trust it to perform well in both the summer and winter seasons.
You won’t have to mess around with diluting, as this coolant is pre-mixed for maximum convenience. All you’ll have to do is simply pour it into your cooling system and start driving.
If you have a GM vehicle that you want to protect throughout each year, the ACDelco DEX-COOL is a great choice for best radiator coolant for hot weather. It will help preserve the overall functionality of your cooling system and engine. You’ll be able to drive for thousands of miles without having to worry about corrosion or other types of damage.
Pros:
- Can be stored for up to eight years in proper conditions
- Anti-corrosion properties help preserve steel, iron, and other metals
- Does not contain any silica whatsoever
- Offers comprehensive protection for up to five years or 150k miles
- Prevents issues with corrosion over the long term
Cons:
- Bottle is a bit small for the price
Best Radiator Coolant for Hot Weather Buying Guide
When you need to find the best radiator coolant for hot weather, it is important that you take a close look at your options. The list below will provide you with important criteria for evaluating these products.
Performance
As you search for the best radiator coolant for hot weather, you’ll need to figure out how well each one performs. You can start off by looking at the boilover protection that these products offer.
The coolant that you buy should have a boiling point of no less than 265 degrees Fahrenheit. This will keep your engine cool and running smoothly in very hot weather.
We also urge you to consider buying a coolant that works as antifreeze as well. Truly versatile coolant products have a versatile formula that offers superb performance year round.
You should look for products that have a freezing point of around -30 degrees Fahrenheit. This will help keep your vehicle running without any issues during the winter months.
You should make a point of considering the area you live in before deciding on one of these products. If you live in a region that gets very hot in the summer, you’ll need a coolant that can meet your needs.
Types of Coolant
Since there are a couple different types of engine coolant available, you will need to explore your options. The more you learn about these choices, the easier it will be to make the right decision.
Some coolant uses Inorganic Acid Technology or IAT, while others use Organic Acid Technology, or OAT. We recommend coolant that uses organic acid technology, as it tends to last significantly longer. You will need to keep in mind that it is not compatible with many older vehicles.
You will find that OAT coolants are also great for aluminum engines. These products typically last up to 150k miles, which is far better than the 36k lifespan of IAT coolants.
Corrosion Protection
Any of the best radiator coolant for hot weather products will have an anti-corrosion formula. It should be able to keep rust off your water pump and other components.
Look for coolants that contain inhibitors that protect against rust. This can ultimately help you extend the overall life of your vehicle. When a vehicle reaches a certain point with corrosion, there isn’t much left to do.
Ease of Use
We definitely recommend choosing a coolant product that comes pre-diluted. This way you won’t need to worry about getting the ratio just right. Some of the very best radiator coolant for hot weather comes ready to use. It will certainly save you a lot of hassle, so this is something to consider when researching your options.
Fuel Type
Make sure that you consider the type of fuel that your vehicle uses before deciding on a certain coolant. You’ll need to make sure that the product you select is compatible with your fuel.
The fact is that not all coolants on the market are compatible with diesel and gasoline engines. You will find that the best radiator coolant for hot weather will have a versatile design that will work for both.
You should check your vehicle’s user manual, as this will also help you make the right choice. Many vehicles need a certain type of coolant to function at their highest possible level.
Radiator Compatibility
Keep in mind that the best radiator coolant for hot weather will be compatible with all different types of metals. You should, however, still consider the material that your radiator is made from.
We recommend looking for coolants that work well with aluminum, cast iron, and even copper metals. This will pretty much guarantee that you won’t experience any issues with compatibility.
Protection
The coolant that you ultimately decide on should provide your vehicle with different types of protection. We have already established that it should help prevent corrosion, but there are other kinds of damage to consider.
You will discover that the best radiator coolant for hot weather will also protect against things like scale and deposits that can form from hard water. While these things might not seem like a major threat, they can cause a lot of damage to your vehicle over time.
Conclusion
In order to choose the very best radiator coolant for hot weather, you will need to find a product that is reliable and offers comprehensive protection.
Make sure that you find out what the boiling and freezing points are for each coolant. This will help you get the most out of the money you spend. Feel free to drop a comment below so we know what you think about our list.
