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Coolant
Engine cooling system is filled at the factory with a liquid consisting of equal proportions (1: 1) of the low-temperature water and the concentrate (composition based on a low-temperature ethylene glycol anticorrosive additives). Such coolant provides not only the performance of the engine cooling system to a temperature of -36 ?� C, but also protects against corrosion of the details, especially of light metal alloy. In addition, it prevents scale formation and significantly increases the boiling point of the coolant. Therefore, the content of low-temperature concentrate during the warmer months and in warmer countries can not reduce the water filling. The concentration of low-temperature water in the concentrate should be at least 40%. In harsh climates can increase the concentration of ethylene glycol and not more than 60% (the freezing temperature of the coolant in this case is about -40 ?� C), since the higher content of low-temperature starts to increase the temperature of the concentrate freeze indicators deteriorate thermal conductivity and specific heat of the coolant. When checking the level and density of coolant determine its condition. The liquid should be clear and transparent. If the coolant is brown, it is necessary to drain it, rinse the cooling system and fill with fresh coolant. Replacing the coolant is necessary after any work on the cooling system from the draining coolant. If the repair replaced the cylinder head, head gasket, radiator or heat exchanger oil, it is necessary to fill the cooling system with fresh coolant. This is due to the fact that the anti-corrosion additive in the coolant during engine operation and the precipitates creates corrosion protection. The coolant in the former operation, corrosion inhibitors are less active and can form a protective layer on newly installed parts.
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