Removing oil in cooling and heating system - RA20001190160X(20-0160)
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.
Preceding work:
Coolant drained (Draining, pouring in coolant - anti-freeze protection table ).
Coolant thermostat removed (20-1100 ).
Operation no. of operation texts and work units or standard texts and flat rates
| Heater controls | set to "warm" (step 1). |
| Coolant | drain Draining, pouring in coolant - anti-freeze protection table |
| Cooling system | fill with 5 % flushing solution (step 2). |
| Engine | warm up to operating temperature and run for about 5 minutes (step 3). |
| Flushing solution | drain and fill cooling system twice with fresh water, run engine each time for about 5 minutes, drain flushing solution completely (steps 5 and 6). |
| Cooling system | check for leaks (Testing cooling system for leaks ). |
Special tool
NOTE:
The oil in the cooling system has to be removed if, for example, engine oil, ATF on models with automatic transmission or hydraulic fluid has got into the cooling system.
Removing oil
- Set heater controls to full capacity.
On these models (light alloy radiator), do not use strongly alcalined cleaner such as P3 Standard (supplier: Henkel).
- Drain coolant Draining, pouring in coolant - anti-freeze protection table .
- Fill the cooling system with a 5 % solution of water and neutral cleaner or with a cleaner such as Neuproton 5226 (supplier: Henkel) which is suitable for cold spraying.
- Warm up engine to about 80 °C by running at moderate revs and maintain at this temperature for about 5 minutes.
- Switch off engine and allow cooling system to cool down to about 50 °C.
- Drain solution completely.
- Immediately after this, fill cooling system twice with fresh water, run until warm (about 5 minutes) and drain.
- Pour in coolant Draining, pouring in coolant - anti-freeze protection table .
- Check cooling system for leaks Testing cooling system for leaks .