Can You Mix Antifreeze Brands? Tips And Tricks In 2023

Granville Zerocol 48 Green Antifreeze 1 Litre — JAR UK Industries


Antifreeze is an essential component of any vehicle’s cooling system. It helps regulate the temperature of the engine and prevents it from overheating. However, one question that many vehicle owners ask is whether they can mix antifreeze brands. In this article, we will explore this issue and provide you with some tips and tricks on how to do it properly.

Why Mix Antifreeze Brands?

There are several reasons why you may need to mix antifreeze brands. One reason is that you may have run out of the original antifreeze and need to top up with a different brand. Another reason is that you may need to change the type of antifreeze used in your vehicle due to a change in the weather conditions.

Tip 1: Check Compatibility

Before mixing antifreeze brands, you need to check if they are compatible. Mixing incompatible antifreeze brands can cause a chemical reaction that can damage your vehicle’s cooling system. To check compatibility, you can refer to the manufacturer’s website or consult with a qualified mechanic.

Tip 2: Check Concentration Levels

Antifreeze concentration levels are critical for proper engine function. Mixing antifreeze brands with different concentration levels can affect the overall performance of your engine. To avoid this, you need to check the concentration levels of both antifreeze brands before mixing them.

Tip 3: Use Distilled Water

When mixing antifreeze brands, it is essential to use distilled water. Tap water contains minerals that can react with antifreeze and cause corrosion in your engine’s cooling system. Distilled water is free of minerals and is the best option for mixing antifreeze brands.

Tip 4: Mix in Equal Parts

To ensure that the antifreeze brands mix properly, you need to mix them in equal parts. Mixing them in unequal parts can affect the overall performance of your engine and cause damage to your cooling system.

Tip 5: Bleed the System

After mixing antifreeze brands, you need to bleed your vehicle’s cooling system. Bleeding removes any air pockets that may have formed during the mixing process. Air pockets can affect the performance of your engine and cause overheating.


In conclusion, mixing antifreeze brands is possible, but you need to do it properly to avoid damaging your vehicle’s cooling system. Always check compatibility, concentration levels, use distilled water, mix in equal parts, and bleed the system after mixing. By following these tips and tricks, you can safely mix antifreeze brands and keep your engine running smoothly.