17 11 509 Flushing radiator: Notes
NOTE:
If oil has penetrated the coolant circuit, you must flush the radiator and coolant expansion tank with cleaning agent.
CAUTION:
When working on the oil, coolant or fuel circuit, protect the alternator against contamination (not applicable to alternators with coolant jackets). Cover alternator with suitable materials. Failure to comply with this procedure may result in an alternator malfunction.