: usually a mix between OAT and silicates or phosphates. It does not contain silicates or phosphates. Corrosion inhibitors in OAT coolants act slower but last much longer than those in traditional coolants. : typically use silicates and/or phosphates Organic acid technology (OAT) coolant Types of corrosion inhibitor: Traditional coolant The lifespan of coolant is determined by the exhaustion of the inhibitors included within it. When these break down, it raises the likelihood of engine corrosion. Inhibitors provide a layer of protection for the metal or alloy engine components. There are different inhibitors in the various type B coolants and they are not necessarily compatible with one another. The anti-freeze/anti-boil won’t break down over time but the inhibitors do, which is why the coolant needs to be replaced periodically. : includes anti-freeze/anti-boil substances to raise the boiling point and lower the freezing point. In Australia, there are two types of coolant - A and B. COOLANT What else is there to know? Types of coolant
This is why different coolants are available. Water-cooled engines can rust over time and the coolant inhibits this process.Įngines are made of different materials - such as aluminium alloy, cast iron and other metals - and the coolant used in a particular engine needs to function well with those materials. It then flows to the radiator where it itself is cooled before heading back to the engine to start the process again.Ĭoolant also inhibits corrosion and scale build-up inside the engine and throughout the other components through which it moves. With all its moving parts, an engine generates a lot of friction and heat and the coolant passes through channels in the engine to withdraw that heat.
Basically, and as its name suggests, coolant works to cool down the engine. What is engine coolant?Ĭoolant is a water-based solution that includes inhibitors to protect the engine against corrosion and damage. If you decide to just grab the sweetest-coloured coolant, slop it into the coolant tank and then tear off up the street without another thought, you could have some issues down the (not very long) track. It’s actually pretty important that you pick the right coolant for your car. When that does happen, and you are knowledgeable enough to check to see the coolant bottle is empty, the decision then becomes what type of coolant to use to refill the system.Ĭoolant comes in a selection of fruity-looking colours with various ingredients, and no one could blame you for standing in front of the coolant stand shaking your head and wondering which one to pick. Engine coolant is something you don’t think much about until the engine overheats or that warning light activates on the dash.
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