Cooling System, Draining and Filling

Cooling system, draining and filling

Special tools and equipment





^ VAG1306 Drip tray for VAG1202A





^ VAG1921 Hose clip pliers
^ Anti-freeze tester

Draining
- Remove engine cover.
- Remove cap from coolant expansion tank.
- Remove insulation tray center and left:





- Unscrew drain plug to drain coolant from radiator (arrow).





- To drain coolant from engine also remove coolant hose from oil cooler (arrow).

Note: Observe proper disposal regulations!

Filling

Note:
^ Only use coolant additive G12 in accordance with TL VW 774 D. Identification: red colored.
^ On no account must G12 be mixed with other coolant additives!
^ If the fluid in expansion tank is brown, G12 has been mixed with other coolant. In this case the coolant must be changed.
^ G12 and coolant additives marked "In accordance with TL VW 774 D" prevent frost and corrosion damage, scaling and also raise boiling point of coolant. For this reason the system must be filled all year round with frost and corrosion protection additives.
^ Particularly in countries with tropical climates, the coolant due to the higher boiling point improves engine reliability when heavily loaded.
^ Protected against frost to about -25°C (in arctic climatic countries to about -35°C).
^ The coolant concentration must not be reduced by adding water even in warmer seasons and in warmer countries. The anti-freeze ratio must be at least 40%.
^ Use clean drinking water when mixing the coolant.
^ If for climatic reasons a greater frost protection is required, the amount of G12 can be increased, but only up to 60% (frost protection to about -40°C), as otherwise frost protection is reduced again and cooling effectiveness is also reduced.
^ If radiator, heat exchanger, cylinder head or cylinder head gasket is replaced, do not reuse old coolant.





Recommended mixture ratios:
1) The quantity of coolant can vary depending upon the vehicle equipment.

- Close drain plug for coolant.





- Fill with coolant up to MAX. mark on expansion tank.
- Install coolant expansion tank cap.
- Run engine until radiator fan comes on.
- Check coolant level and top off if necessary.
When engine is at normal operating temperature, coolant level must be on MAX. mark
When engine is cold, coolant level can be between MIN. and MAX. marks.