Filling cooling system: VW 1.2 TDI (ADV, AFU, CFWA, CLNA, …)

Filling cooling system
Chapter
“
Filling: Using
cooling system charge unit
VAS 6096
only
”
Chapter
“
Topping up
”
Caution
If large components (e.g. engine, radiator etc.) are to be removed/installed, it is absolutely necessary to drain the cooling system.
If coolant has been drained, cooling system must be filled using
cooling system charge unit
VAS 6096
Chapter
.
Note
The amount of water used in the coolant mixture has a great influence on its effectiveness. Because the water quality differs from country to country and even region to region, the quality of the water to be used has been defined. Distilled water fulfils all requirements. For this reason, we recommend using distilled water when mixing coolant for topping up or replacing coolant.
Use only coolant additives which conform with the
Electronic Parts Catalogue
. Other coolant additives may reduce corrosion protection substantially. The resulting damage could lead to loss of coolant and subsequent severe damage to the engine.
The correct coolant solution ratio helps prevent damage from freezing and corrosion as well as scaling. Moreover, the boiling temperature is raised. Therefore, the cooling system must be filled all year round with coolant additive.
Because of its higher boiling point, the coolant improves engine reliability under heavy loads, particularly in countries with tropical climates.
ONLY
refractometer
T10007A
may be used for determining current anti-freeze value.
Frost protection must be guaranteed down to -25°C as a minimum and, in countries with arctic conditions, down to approx. -36°C. Increasing the frost protection is permissible only if climatic conditions require stronger frost protection. It may, however, be increased only to a maximum of -48°C. Otherwise, the cooling effect will be impaired.
The coolant concentration must not be reduced by adding water even in warmer seasons and in warmer countries. Frost protection must be guaranteed down to at least -25°C.
Read off anti-freeze figures for respective replenished anti-freeze.
The temperature read off the
refractometer
T10007A
equates to the
»ice flocculation point«
. Flakes of ice can start forming in the coolant below this temperature.
Do not reuse old coolant.
Use only a water/coolant additive mixture as a slip agent for coolant hoses.
Coolant mixture ratio
Coolant additive (40%) and distilled water (60%) for freeze protection down to -25°C.
Coolant additive (50%) and distilled water (50%) for freeze protection down to -36°C
Coolant additive
Electronic Parts Catalogue
The quantity of coolant can vary depending upon vehicle equipment.
Reconnect coolant hoses.
Install noise insulation or skid plate
General body repairs, exterior
Rep. gr.
50
Noise insulation; Assembly overview - noise insulation
.