(1) engine cooling system must be carefully cleaned before add antifreeze. This is because there is antifreeze added detergents and cleaning agents, if not for the engine cooling system be carefully cleaned directly after adding antifreeze, the engine cooling system antifreeze in contact with any original scale off before use to make antifreeze liquid becomes turbid, thickens, and even color, taste , severe clogging pipes, waterways or precipitation in the lower part of the tank bent parts, resulting in poor heat dissipation, antifreeze cannot be recycled, resulting in engine temperature. To prevent the occurrence of these phenomena Launch X431 Diagun, antifreeze before filling, use 10% aqueous solution of caustic immersion tanks one hour, and then discharge fluid, and then repeatedly washed with softened water 2-3 times to remove the engine cooling system of the deposited, after flushing then filling antifreeze.
(2) before filling the antifreeze should to check for the car engine cooling system whether have leakage, if have immediately remove leakage before use the antifreeze.
 
(3) prohibits direct filling the antifreeze liquor. Some drivers and maintenance personnel think that antifreeze the purer the better TPMS, ethylene glycol concentrations bigger the better, and direct filling antifreeze liquor, so not only don't meet the requirements of antifreeze on the freezing point, but there will be some unexpected phenomena such as antifreeze deterioration, large concentrations of high density, low viscosity increases and the emergence of the phenomenon of higher engine temperatures. Therefore, when using antifreeze liquor must be modulated according to the requirements, prohibit the direct use.
(4) the use of antifreeze to implement regular inspections. Antifreeze is usually valid for four years, so there is continuity in use. To reduce waste, do not arbitrarily replace the antifreeze filling. However, the response to the implementation of the use of antifreeze checked regularly scheduled items. Can be combined with seasonal maintenance annually antifreeze checked. Inspection should include checking the freezing point , the proportion of checks , but also deal with the use of antifreeze visual inspection , found that the proportion increases, antifreeze thickens, freezing rise , and antifreeze becomes turbid , bad, taste , foam, and other timely replacement.
(5) different manufacturers produced antifreeze cannot be mixed. Mix will lead to corrosion of the engine and the tank.
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