The three types of coolant classes, G11, G12 and G13 differ in the types of additives there are used: organic or inorganic Differences between G12 and G11 coolant Although this action prevents the forming of a protective layer and its rapid shedding as a result of vibrations and temperature changes, which makes it possible to improve heat transfer and longer use time. G12 coolant has a big disadvantage, it begins to act only when corrosion appeared. In addition to these additives, G12 coolant type must also have anti-foaming and lubricants. Other additives that help especially because ethylene glycol is aggressive for non-ferrous metals, other additives based on organic acids that act as an inhibitor, and other substances that help against corrosion or to prevent the formation of scale G12 coolant contains about 5% distilled water, ethylene glycol alcohol to prevent freezing, a colorant that is used often to distinguish the class of coolant but also to have better visibility in the reservoir. How to choose the best coolant type for your car.Differences between G12 and G13 coolant.Differences between G12 and G12 + coolant.Differences between G12 and G11 coolant.In its pure form, ethylene glycol is a colorless and viscous oily liquid that boils at 197☌ (386.6 ☏) and freezes at a temperature of -13 ☌ (8.6 ☏).Īdditives are added such as a dye to have greater visibility in the tank for a better advantage. Often the percentage of ethylene glycol in the coolant is about 50% to 60% which allows for achieving the best performance. Its service life is 4-5 years, and the density is 1.065 – 1.085 g / cm3 (at 20 ° C or 68 ° F). The freezing point is within 50 degrees C below zero or -58 ° F, and the boiling point is about + 118 ° C (about 245 ° F) and has in its component 2 or more carboxylic acids.īecause of its additives, G12 coolant inside the radiator, corrosion localization occurs only where necessary, forming resistant microfilm, it affects the formed foci of corrosion. G12 is a type of coolant with red or pink color that is based on ethylene glycol and carboxylate compounds, it does not contain silicates and is used on cars from 1996 to 2001.
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