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Does it matter which coolant I use?

The short answer is yes, it does matter which coolant you use in your vehicle. The type of coolant you choose can have a significant impact on your engine's performance, longevity, and overall health. In this article, we'll explore the importance of using the right coolant and provide guidance on how to make the best choice for your car.


Understanding Coolant Types


Coolants, also known as antifreeze, come in several different formulations, each designed to serve a specific purpose. The most common types are:


  • Ethylene Glycol-Based Coolant: This is the traditional and most widely used coolant. It provides excellent freeze and boil protection, but can be corrosive to certain metals over time.

  • Propylene Glycol-Based Coolant: This is a less toxic alternative to ethylene glycol, making it a safer choice for the environment and for vehicles with aluminum components.

  • Hybrid Organic Acid Technology (HOAT) Coolant: This coolant combines the benefits of traditional and organic acid-based coolants, offering improved corrosion protection and extended service life.



It's important to use the correct coolant type recommended by your vehicle's manufacturer, as mixing different coolant formulations can lead to compatibility issues and potentially cause damage to your engine.


Consequences of Using the Wrong Coolant


Using the wrong coolant can have several negative consequences for your vehicle:


  • Accelerated Corrosion: Certain coolant types may not be compatible with the materials used in your engine, leading to increased corrosion and potential component failure.

  • Reduced Cooling Efficiency: Incompatible coolants can affect the heat transfer properties of the system, reducing the coolant's ability to effectively dissipate heat and keep your engine at the optimal operating temperature.

  • Decreased Lifespan: Improper coolant use can shorten the overall lifespan of your engine and related components, leading to more frequent and costly repairs.



To avoid these issues, it's crucial to follow the manufacturer's recommendations and use the correct coolant type for your vehicle.


Choosing the Right Coolant


When selecting a coolant, consider the following factors:


  • Manufacturer Recommendations: Check your owner's manual or contact your vehicle's manufacturer to determine the recommended coolant type and specifications.

  • Coolant Color: Different coolant types are often color-coded to help you identify the correct one. However, it's important to verify the specific type, as some manufacturers may use different color schemes.

  • Coolant Compatibility: Ensure that the coolant you choose is compatible with the materials used in your engine, such as aluminum, copper, or brass.

  • Coolant Longevity: Some coolants are designed to last longer than others, reducing the frequency of coolant flushes and replacements.



By following these guidelines and using the recommended coolant for your vehicle, you can help ensure optimal engine performance, extended component lifespan, and improved overall reliability.

What happens if you use the wrong coolant?


Putting the Wrong Engine Coolant in Your Car
As mentioned above, the mix can solidify, block your engine, and cause overheating, which can, in turn, cause the following problems: Degraded cylinder heads. Head gasket breakage. Marred hoses.



Is it OK to use different coolant in car?


Mixing different brands of coolant for a car is generally not recommended. Coolants can have different chemical compositions and additives, and mixing them can lead to potential issues such as reduced effectiveness, corrosion, and damage to the cooling system (1).



Can you use any coolant in any car?


No single coolant can meet the specs of all manufacturers. The coolant must be compatible with all the metals, plastics, rubber and gaskets used in your engine. The damage won't show up for years if you use the wrong coolant. But the right stuff for your vehicle, even if you have to buy it at the dealer.



Can wrong coolant damage thermostat?


Corrosion occurs, among other things if a wrong coolant is used. The corrosion attacks the thermostats aluminum parts that almost "etch away" (see figures 1 and 2). But also mixing of different coolants can cause corrosion. Therefore avoid mixing different types of coolant together.



Does coolant affect AC?


Insufficient coolant in the engine can have indirect effects on the performance of your car's AC system: Inadequate Cooling Capacity: The AC system's performance depends on the engine's cooling capacity. If the coolant level is low, the engine may struggle to maintain the optimum operating temperature.



What happens if you put a different type of coolant?


If you do mix coolant, and the two types of coolant you mix are not compatible, it could create sludge that can block the system, it can also increase corrosion in your engine and cooling system. To rectify this, you'll need to flush the system.



What happens if coolant is low?


Without sufficient coolant, your engine could overheat. Many modern vehicles have an automatic engine cut-off feature when the engine overheats to help prevent significant damage. If this happens, it's best to tow your vehicle to your nearest automotive professional for a proper diagnosis.



What color is universal coolant?


Green
This is the short short short version. Coolant color does not indicate the properties or type of coolant. Green is common for universal because that's what the OEMs used to use back when there were only a couple of coolant technologies.



Does it matter what kind of coolant I use?


Antifreeze comes in different types, each formulated to work with specific engine materials and cooling system components. Using the wrong type can lead to chemical reactions that may damage internal parts.



Are orange and pink antifreeze the same?


Red/Pink Coolant
It works in the same way as orange coolant in removing excess heat from the engine and protecting the engine from freezing temperatures. One of the factors that distinguish the difference between Orange and Red or Pink coolants, is that Red and Pink coolants do not contain silicates or Phosphates.


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.