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25/10/2019 News

What coolant and antifreeze should I use?

What coolant and antifreeze should I use


The choice of antifreeze and its ready-to-use, water-mixed form, engine coolant, differs between vehicles. If you’re looking to top-up or flush and re-fill your cooling system, this guide will help you find the correct coolants for your car. 

What’s the correct antifreeze for my car? 

Multiple types of antifreeze are available. Each uses a different type of corrosion inhibitor, which is indicated by a dye: 

  • IAT (Inorganic Additive Technology) – Silicates – Green 

  • OAT (Organic Acid Technology) – Organic Acids – Orange 

  • HOAT (Hybrid OAT, Phosphate-free) – NAP-free – Turquoise 

  • HOAT (Hybrid OAT) – Silicates and organic acids – Yellow  

  • Si-OAT (Silicated HOAT) – Silicates and organic acids – Purple  

  • P-HOAT (Phosphated HOAT) – Phosphates and organic acids – Blue or pink 

If you are wondering which antifreeze you need, always check your owner’s manual – every vehicle differs, and using the wrong type can rapidly damage your engine.  

What coolant should I use? 

Coolants are simply a water-antifreeze mix, so correspond with the colours and inhibitor types listed above. As with purchasing antifreeze, always check your owner’s manual before you buy – using the incorrect coolant, or a mix of different varieties, will end up damaging your engine. 

Use Total LubAdvisor 

As well as displaying which lubricants drivers and fleet operators should use, Total LubAdvisor also provides coolant recommendations: 

  • Enter your reg or search for your vehicle. 

  • On the vehicle page, click ‘Select other component’. 

  • Select ‘Cooling system’.  

  • View the recommended coolant for your vehicle. 

Don’t leave your choice of antifreeze or coolant to chance – always check your owner’s manual. For more information, view The Ultimate Guide to Coolant and Antifreeze, or contact our experts if you have a specific query.