changing radiator fluid
Member
Joined: Mar 2007
Posts: 169
Likes: 2
300TE, 300CE
expansion tank
I prefer to refill it slowly through the expansion tank- add a liter of coolant, add a liter of water, etc., until full.
Good eye from Kestas about the block drain, and if you do open the thermostat, the tightening torque for the three bolts is 10 NM. I just replaced a thermostat last month.
Good eye from Kestas about the block drain, and if you do open the thermostat, the tightening torque for the three bolts is 10 NM. I just replaced a thermostat last month.
Super Member
Joined: May 2003
Posts: 696
Likes: 4
From: Motor City
95 E320 Cabriolet, 108K
Better yet, if you take the thermostat out, you can flush the entire cooling system.
The procedure I use for all my vehicles is as follows:
1. Drain fluid, radiator and block
2. Remove the thermostat
3. Reinstall the t-stat housing and upper radiator hose
4. Disconnect upper radiator hose at radiator
5. Flush system with garden hose through upper radiator hose until water runs clear
6. Start car so the engine can flush the water pump
7. Disconnect heater hoses, open heat valve
8. Flush heater core
9. Flush overflow tank
10. Drain as much water as possible from cooling system
11. Siphon water from overflow tank
12. Flush residual tap water from system by replacing it with distilled water
13. Again drain water from system
14. Reinstall thermostat
15. Button everything back up
16. Refill cooling system with specified amount of antifreeze calculated from the system capacity, bring up to level with distilled water
17. Run car, top off coolant with water
18. Keep adding water as required every morning until system is topped off
The procedure I use for all my vehicles is as follows:
1. Drain fluid, radiator and block
2. Remove the thermostat
3. Reinstall the t-stat housing and upper radiator hose
4. Disconnect upper radiator hose at radiator
5. Flush system with garden hose through upper radiator hose until water runs clear
6. Start car so the engine can flush the water pump
7. Disconnect heater hoses, open heat valve
8. Flush heater core
9. Flush overflow tank
10. Drain as much water as possible from cooling system
11. Siphon water from overflow tank
12. Flush residual tap water from system by replacing it with distilled water
13. Again drain water from system
14. Reinstall thermostat
15. Button everything back up
16. Refill cooling system with specified amount of antifreeze calculated from the system capacity, bring up to level with distilled water
17. Run car, top off coolant with water
18. Keep adding water as required every morning until system is topped off
