“These days, there’s no real reason for a coolant manufacturer to use a certain colour, so it’s not easy for you to know what chemicals are in the coolant just by seeing whether it’s blue, green, yellow or orange. Prestone is yellow, but many other coolant manufacturers use different colours. “Newer coolants, such as Prestone, based solely on the OAT chemical make-up, now offer a 10-year or 300,000-mile change interval thanks to their superior corrosion protection. They could be a blend of IAT and OAT chemicals, and were therefore named ‘Hybrids’. These ‘Extended Life Coolants’ (ELC), were usually orange in colour and offered a five-year or 100,000-mile change interval. “Next came Organic Acid Technology (OAT) coolants, whose chemical make-up offered better protection for cooling systems, and extended the life of the coolant. With these types of coolants, you’d normally have to change them every two years, or every 60,000 miles. “Older coolants that used Inorganic Additive Technology (IAT) were usually blue or green in colour. “In days gone by, the colour of coolant was determined by the type of chemicals used to prevent corrosion - meaning you could tell a lot about the type of coolant used by its colour. As for coolant/antifreeze, there are a couple of key differences as to why some products are one colour and others are another, as our expert Bruce Ellis explains below: Vehicle fluids vary in colour from bright pink to reddish-brown, so if you ever need help identifying which is which, take a look at our car fluid finder chart. Why is Coolant/Antifreeze Different Colours? See Prestone Coolant/Antifreeze in Action.What Are the Advantages of Using High-Performance Coolant/Antifreeze?.Why is Coolant/Antifreeze Different Colours?.We also look at some of the advantages of using high-performance coolant/antifreeze, so you can make a better-informed decision on the product that’s right for you. However, it’s important to make sure you’re putting the right fluid in your car, so here we give a bit of insight into the differences. There are historical reasons why it comes in different colours, but these days it doesn’t necessarily tell you all that much. The colour of engine coolant isn’t there to make it look pretty. You might be wondering which you should use if you need to top up? Disposal of container should comply with local council regulations.Have you ever wondered how pink, orange, blue and green engine coolants differ from each other? Perhaps you’ve bought a car, checked the coolant/antifreeze reservoir for the first time and noticed it’s different from your last car. After use, dispose of container in a responsible manner. phone Australia 13 11 26 New Zealand 0800 764 766) or a doctor (at once).ĮNVIRONMENT: Do not pollute drains, soil or water with used products. For advice, contact a Poisons Information Centre (e.g. If eye irritation persists: Get medical advice/attention. IF IN EYES: Rinse cautiously with water for several minutes. Store locked up.įIRST AID: IF INHALED: Remove person to fresh air and keep comfortable for breathing. Use personal protective equipment as required. For an OEM Replacement Coolant please use Nulon Long Life Coolant Part No. If you are unaware of the type or life of the coolant in the system we recommend a complete coolant change within the next 5000km or 6 months. NOTE: The life of Green General Purpose Coolant Premix when used as a top-up, defaults to that of the original coolant in the cooling system. Check the coolant level, and top it up if necessary. When the engine is warm, turn it off and allow it to cool. Check the coolant level is correct when the system is cool.ĪS A TOP-UP TO EXISTING COOLANT: Add as top-up to existing red coolant, then start the engine and turn the heater on. Secure the radiator cap start the engine, bleed air from the system if necessary. Add Green General Purpose Coolant Premix. Then flush the cooling system with clean water to remove all traces of old coolant. If the system is clean, ensure the engine is switched off, turn the heater on and drain the old coolant (when cool) by removing the drain plug or bottom radiator hose. GREEN COOLANT MANUAL
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