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Does it matter what antifreeze coolant I put in my car?


Antifreeze coolant is a critical component of your car's engine system, ensuring it operates efficiently in both extreme heat and cold. However, not all antifreeze coolants are created equal, and using the wrong type can lead to costly repairs and reduced performance. In this article, we’ll explore why choosing the right antifreeze coolant matters and how to make the best choice for your vehicle.


Why Is Antifreeze Coolant Important?


Antifreeze coolant serves two primary purposes: it prevents your engine from overheating in the summer and freezing in the winter. Additionally, it protects your engine components from corrosion and helps maintain optimal performance. Modern vehicles rely on specific formulations of coolant to meet the unique requirements of their engines, making it essential to use the correct type.


Types of Antifreeze Coolants


There are several types of antifreeze coolants available, each designed for specific vehicle makes and models. Here’s a breakdown of the most common types:



  • Inorganic Additive Technology (IAT): Typically green in color, this traditional coolant is commonly used in older vehicles. It requires frequent replacement, usually every two years or 30,000 miles.

  • Organic Acid Technology (OAT): Found in many modern vehicles, this coolant is often orange, red, or pink. It has a longer lifespan, lasting up to five years or 150,000 miles.

  • Hybrid Organic Acid Technology (HOAT): A blend of IAT and OAT, this coolant is yellow or turquoise and is used in specific makes like Ford and Chrysler. It offers extended protection and durability.

  • Phosphate-Free Coolants: Commonly used in European and Asian vehicles, these coolants are designed to meet the unique requirements of those engines.


What Happens If You Use the Wrong Coolant?


Using the wrong antifreeze coolant can have serious consequences for your vehicle. Here are some potential issues:



  • Corrosion and Damage: The wrong coolant may not provide adequate protection against corrosion, leading to damage in your radiator, water pump, and other engine components.

  • Reduced Cooling Efficiency: Mismatched coolant can cause your engine to overheat or fail to maintain proper operating temperatures.

  • Clogging and Deposits: Mixing incompatible coolants can result in the formation of sludge or deposits, which can clog your cooling system.

  • Voided Warranty: Using a coolant that doesn’t meet your manufacturer’s specifications could void your vehicle’s warranty.


How to Choose the Right Antifreeze Coolant


To ensure you’re using the correct antifreeze coolant for your car, follow these steps:



  • Check Your Owner’s Manual: Your vehicle’s manual will specify the type of coolant recommended by the manufacturer.

  • Look for Manufacturer Approvals: Many coolants list the vehicle makes and models they are compatible with on the label.

  • Consult a Professional: If you’re unsure, visit a trusted auto repair shop like Kevin’s Autos for expert advice and service.

  • Avoid Mixing Coolants: Never mix different types of coolant, as this can lead to chemical reactions and damage your engine.


Conclusion


Yes, it absolutely matters what antifreeze coolant you put in your car. Using the correct type ensures your engine stays protected, performs efficiently, and avoids costly repairs. When in doubt, consult your owner’s manual or reach out to a professional mechanic. At Kevin’s Autos, we’re here to help you keep your car running smoothly with expert advice and top-notch service.


Frequently Asked Questions

What color is universal antifreeze?


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.



What happens if you use the wrong color antifreeze?


Putting the Wrong Engine Coolant in Your Car
Mixing coolants of various types can have extensive and expensive consequences. 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.



Does the color of antifreeze mean anything?


Traditionally, the dyeing of coolants was a loose way to signify their chemical composition. For example, green indicated an ethylene glycol-based coolant. These are used in typical automotive systems and are toxic. Traditionally, pink was used to indicate a propylene glycol-based coolant, which is nontoxic.



What happens if you accidentally mix green and orange antifreeze?


Clogging: The different acids in both coolants can cause them to react, creating a gel-like substance that can clog your car's radiator and cooling system components. Mixing them can cause the formation of sludge and other deposits that affects efficiency.



Can I use any type of antifreeze in my car?


There are many different types of antifreeze, so it's crucial to understand that there is no single antifreeze that's suitable for all makes and models. The best thing to do is to always use the antifreeze that's recommended by your car manufacturer.



Can a car overheat with the wrong coolant?


There's a problem with your coolant: If your vehicle has the wrong coolant or you have an improper coolant-to-water ratio (50/50 is proper), your engine may be prone to overheating.



How do I know what coolant to put in my car?


What Kind of Coolant Does My Car Need? If you are still unsure what to pick, the best starting point is to buy the coolant recommended in your owner's manual.



Does it really matter what type of antifreeze I use?


As a general rule, you shouldn't mix different types of coolant. However, nowadays, with new vehicle models, the colour of the coolant you choose doesn't always matter. Whereas on older models, using the wrong type of coolant could cause damage to the cooling system and engine.



What is the correct coolant antifreeze for use in most vehicles?


IAT (inorganic acid technology) antifreeze is the green antifreeze of old, and the universal standard for over 70 years.



Is Prestone coolant really universal?


It can be used in all cars effectively, offering the same levels of protection, and without any damage. We offer a guarantee that Prestone is suitable for all cars and engine materials. It's also suitable for all light duty passenger vehicles.


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.