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Engine cooling system
The engine cooling system is filled at the factory long-acting coolant that does not need replacing.
The coolant consists of 60% water and 40% from the low temperature concentrate G12 (low-temperature structure based on ethylene glycol with corrosion inhibitors). This mixture not only ensures the efficiency of the engine cooling system to a temperature of -25 ?� C, but also protects parts from corrosion, particularly parts made of light alloys. Furthermore, this mixture prevents the formation of scale and significantly increases the boiling point of the coolant.
Therefore, the content of low-temperature and concentrate in the warmer months and in warmer climates should not be reduced by the use of water for topping up. The proportion of low temperature of the concentrate should be at least 40%.
If in harsh climates, a higher frost resistance of the coolant can share concentrate G12 increase, but only up to 60% (the freezing temperature of the coolant in this case is about -40 ?� C), since a larger proportion of the low temperature freezing point of the concentrate coolant will begin to rise, and, in addition, the thermal conductivity and specific heat parameters coolant deteriorate.
As the low temperature of the concentrate should be used only our structure G12 or concentrate with the specification TL-VW 774 D (pay attention to the label on the container).
Other concentrates can be primarily largely aggressive towards anticorrosive coatings.
Caused by the fault of these concentrates the corrosion of metal parts can lead to leakage of the coolant, which in turn - to serious engine damage.
As the low temperature of the concentrate should be used only our structure G12.
When topping up the coolant, note, please, the following: in any case should not be confused with other structure G12 concentrates low-temperature (as well as the composition of the G11).
You can define structure G12 on red color in the coolant expansion tank. If the coolant in the expansion tank brown mean structure G12 is mixed with another low temperature concentrate! In this case, be sure to replace the coolant!
Otherwise you may cause serious disturbances in the engine!
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