Removal of oil from cooling and heating system - ra20006010016x(0016)
WARNING: This page does not describe the selected car, but rather 42 other vehicles, including the 1999 Mercedes-Benz S600, 1999 Mercedes-Benz S500, 1999 Mercedes-Benz S420, 1999 Mercedes-Benz S320, and 1999 Mercedes-Benz CL600. However, it is still accessible from the selected car via links, so may be relevant.
Engines 601, 602 (except 602.98), 603
Preceding work:
Coolant drained (Draining, pouring in coolant - anti-freeze protection table ).
Coolant thermostat removed (20-1100 ).
Operation no. of operation texts and operation values or standard texts and flat rates
| Heater control | set to "warm" (step 1). |
| Cooling system | fill with a 5 % flushing solution (step 2). |
| Engine | warm up to normal operating temperature and run for approx. 5 minutes (step 3). |
| Flushing solution | drain and fill cooling system twice with fresh water, run engine each time for approx. 5 minutes, completely drain flushing solution (steps 5 and 6). |
| Cooling system | check for leaks (Testing cooling system for leaks ). |
Special tool
NOTE:
Oil must be removed from the cooling system if e. g. engine oil, automatic transmission fluid on models fitted with automatic transmission, or hydraulic oil has got into the cooling system.
Removing oil
- Set heater control to full capacity.
On such vehicles (light alloy radiator) sharply alkaline cleaners such as P3 Standard (supplier: Henkel) must not be used.
- Fill the cooling system with a 5 % solution of water and neutral cleaner or with a cleaner suitable for cold spraying, e. g. Neuproton 5226 (supplier: Henkel).
- Warm up engine to approx. 80°C by running at moderate rpm and maintain for approx. 5 minutes at this temperature.
- Switch off engine and allow cooling system to cool down to approx. 50°C.
- Drain solution completely.
- Immediately after this, fill cooling system twice with fresh water, warm up engine (approx. 5 minutes) and drain.
- Check cooling system for leaks (Testing cooling system for leaks ).