Integral coolant expansion tank

Remove radiator. Refer to 17 11 000 REMOVING AND INSTALLING RADIATOR  .

1. Prepare approx. 2 liters of cleaning agent.
2. Fill radiator and coolant expansion tank and shake well. Wait a few minutes until oil has separated.
3. Drain radiator and coolant expansion tank.
4. Reinstall cleaned radiator and if necessary coolant expansion tank.
5. Fill entire cooling system (heating control to "warm") with hot water and thoroughly flush by changing water several times.
6. Check drained flushing fluid for traces of oil. If necessary, repeat step 5.

   After cleaning procedure, top up coolant. Refer to TOP UP COOLANT!  .