Required special tool:
- Densimeter for measuring the concentration of antifreeze or, respectively, the device HAZET 4810-B for measuring the density of the electrolyte and the concentration of antifreeze. An antifreeze densimeter is often offered for use at petrol stations.
Required consumables:
- Antifreeze for coolant G12 Plus from VW / SEAT (lilac, accurate specification designation G 012 A8F) or other antifreeze marked «according to VW/SEAT-TL-774-F», eg Glysantin-Alu-Protect-/G30.
If antifreeze for coolant G12 firms \ LL / / SEAT is filled (red color, exact specification designation G012 A8D), then for topping up you can use G12 rot antifreeze or another antifreeze marked «according to VW/SEAT-TL-774-D», e.g. Glysantin-Alu-Protect-Premium/G30.
Note: Antifreeze G12 purple can be mixed with Antifreeze G12 red
- Pure soft water.
Examination
- Warm up the engine while driving until the upper coolant supply hose to the radiator feels slightly warm to the touch. The temperature of the liquid in the expansion tank during the measurement should be approximately +20°C.
Safety instructions
When the engine is hot, open the expansion tank cap carefully. Risk of burns from steam! Place a cloth over the lid before opening. Open the cover only when the coolant temperature is below +90°C.
- Carefully open expansion tank cap.
- Suck in the coolant with a densimeter and determine its density by the position of the float.
- In our latitudes, the concentration of antifreeze should prevent freezing of the coolant to a temperature of -25°C, and in extremely cold climates - to a temperature of -35°C.
Adding antifreeze
To protect against frost down to -25°C, the coolant must contain 40% antifreeze. If the coolant, without freezing, must withstand temperatures down to -35°C, then the ratio of antifreeze and water should be 1: 1.
Attention: If frost protection is required at -40°C, the concentration of antifreeze in the coolant can be increased to 60%. With a higher concentration of antifreeze, the freezing point rises again, in addition, the cooling ability of the liquid deteriorates.
Attention: Do not use the outdated G11 antifreeze used on other VW/SEAT models. Antifreeze G11 is green and G12 is red. Antifreeze G11 green and G12 red must not be mixed, otherwise serious engine damage will result.
Note: If the coolant is found to be brown (antifreeze G11 and G12 mixed), such liquid from the cooling system must be urgently completely drained. Fill the cooling system with clean water and run the engine for two minutes to flush the system. After that, drain the liquid from the cooling system and fill the system with a coolant of the prescribed composition.
The table below shows how much antifreeze should be added to the coolant in order to obtain the desired concentration. These are guide values, since the coolant capacities vary depending on the engine.
Example:Measurement of the antifreeze concentration with a densimeter showed that the coolant is guaranteed against freezing down to -10°C. In this case, 2.0 liters of coolant must be drained from the cooling system and 2.0 liters of clean VW / SEAT antifreeze should be poured into the system. This guarantees the coolant against freezing down to -25°C.
- Close the cap on the expansion tank and, after a test drive, recheck the concentration of antifreeze in the coolant.
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