I just bought a 89 300ce. Can anyone advise me how to change the coolant?

I just flushed mine yesterday. Here are the pics and prices of what I bought:

Red Line Watter Watter $10.49 from Canadian Tire
Prestone Super Flush $3.99 from Canadian Tire instead of MB Citric Acid $24.00
Distilled Water $2.97 from Wal Mart


Mercedes Benz Thermostat $23.04


Mercedes Benz Antifreeze Yellow/Orange
Cost:$43.68 Canadian for 2x 3.785 liters(1 US gallon) taxes included.
The parts guy cut me a deal and gave it to me for $32.91 taxes included.





Here is what I did:
I drained the entire cooling system and filled with the Prestone flush and water. Ran that through for 15 minutes with the heat on maximum setting and went for a short drive. Came back and drained that all out. The fluid was super clean! Then I filled with water and ran for 15 minutes with the heat still on maximum setting and drained that all out. Finally, I filled up with the MB antifreeze and distilled water and topped off with the Red Line Water Wetter. Good as new!

This is what I used for a refernce. Be patient, it may take a minute to load and is worth it:
http://skinnerbox.steaky.org/Service/W124/Index/103/20CoolingSystem.htm

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1989 300CE Astralsilber/Schwarz
1992 300CE Schwarz/Schwarz

I am ready to do the job as welll and have seen information regarding pulling the engine drain plugs. What about the drain plugs?

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Steve
1985 Mercedes 500SL Euro (Gray market)
1995 BMW 520i Euro (Gray market)
1992 BMW 525it Wagon
1994 Honda Del Sol Si

http://skinnerbox.steaky.org/Service/W124/w124CD1/Program/Engine/103/20-0100.pdf

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1989 300CE Astralsilber/Schwarz
1992 300CE Schwarz/Schwarz

It says in step 3 to remove crankcase drain plugs. I was hoping not to do so. Oh well, procedures are procedures.

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Steve
1985 Mercedes 500SL Euro (Gray market)
1995 BMW 520i Euro (Gray market)
1992 BMW 525it Wagon
1994 Honda Del Sol Si

By doing that, you will get most of the coolant out. Yesterday, when I did mine, I had to refill over 8 liters (more than 2 gallons). The radiator only holds maybe half of that.

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1989 300CE Astralsilber/Schwarz
1992 300CE Schwarz/Schwarz

Drain the block, otherwise you will either leave old coolant or flush in there, not desirable.

Use the citric acid, Preston isn't anywhere near as good at removing deposits. Not necessary unless you think you have considerable scale, though.

Peter

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1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!

I realize that this is an older thread, but the Cooling System Flush reference sheet is no longer at that URL. If someone sill has it, I would appreciate it if you can post a new link to it or upload it here as an attachment.

Thanks.

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Steven
1989 260E (276K miles)
1995 E320 (50K miles)