COOLING SYSTEM, DRAINING AND FILLING
Special tools and workshop equipment required
- Adapter V.A.G 1274/8
- Drip Tray VAS 6208
- Hose Clip Pliers V.A.G 1921
- Cooling System Charge Unit VAS 6096
- Refractometer T10007
Draining
Note. Drained coolant must be stored in a clean container for disposal or reuse.
| WARNING | Cover cap of expansion tank with rag and open carefully, as hot steam for example hot coolant may escape when opened. |
Open cap of coolant expansion tank.
Remove noise insulation. Refer to Removal and Installation .
Place the VAS 6208 under engine.
Drain the coolant, by pulling off the lower coolant hose -arrows-.
Scheme 112
Filling
Note. The cooling system is filled year-round with a mixture of water and coolant additive. Mixture ratio COOLING SYSTEM, DRAINING AND FILLING . Only use coolant according to the manufacturers maintenance information. Other coolant additives may above all reduce the corrosion protection effect significantly. The damage resulting from this may lead to loss of coolant and consequently to severe engine damage. Coolant with the correct mixture ratio COOLING SYSTEM, DRAINING AND FILLING prevents freezing and corrosion damage and calcium deposits. They also raise the boiling point. The cooling system must be filled with coolant additive year-round. Because of its high boiling point, the coolant improves engine reliability under heavy loads, particularly in countries with tropical climates. Protection against frost must be assured down to approximately -25 °C (-13°F) (in arctic climatic countries down to approximately -35 °C (-31°F). The coolant concentration must not be reduced by adding water even in warmer seasons and in warmer countries. Coolant additive portion must be at least 40%. If more freeze protection is needed due to the climate, increase the amount of coolant additive, but only up to 60% (freeze protection down to -40 °C (-40°F)). Otherwise the freeze protection and cooling effectiveness will be reduced. Only use clean drinking water for mixing coolant. If radiator, heat exchanger, cylinder head or head seal or cylinder block were replaced, do not reuse used coolant. Dirty coolant may not be used again. Use the T10007 to determine the level of freeze protection in the coolant system.
Push the lower coolant hose onto the radiator -arrow-.
Fill coolant reservoir of VAS 6096 with at least 8 liters of pre-mixed coolant with correct mixture ratio COOLING SYSTEM, DRAINING AND FILLING => Coolant Mixture Ratio .
