Here is my process for flushing the cooling system... - Saab General Bulletin Board - Saabnet.com
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Here is my process for flushing the cooling system...
Posted by REM in Seattle (more from REM in Seattle) on Tue, 19 May 2009 08:49:15
In Reply to: Can I do this for a couple of days with the coolant?, bender
[Profile/Gallery]
, Mon, 18 May 2009 18:39:32
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When I flush the cooling system, for example to change coolant types or the get rid of an unknown coolant; here are my steps:
1) I drain the cooling system (typically by removing the bottom radiator hose.
2) Refill the cooling system with distilled water (could use tap water but distilled water has no minerals so will have no possible chemical reaction/particulates).
3) Run the engine until the thermostat opens (engine reaches normal operating temperature).
4) Let engine cool, then drain and refill with distilled water again.
5) Run the engine until the thermostat opens (engine reaches normal operating temperature).
6) Let engine cool, then drain and refill with one half the system volume in pure coolant and top off with distilled water Remember that there will always be an unknown amount of water trapped in the system. If the cooling system holds 10 quarts, after draining the system, add 5 quarts of pure coolant and top off with distilled water.
7) Run the engine until the thermostat opens to remove any air trapped in the system and let engine cool, top off if needed with distilled water.
A long process, but I am sure that the system was cleared of the old coolant and that the new coolant is the right mixture strength.
REM in Seattle
2005 Saab 9-3 Aero CVT; 23,000 miles
1998 Saab 900SET, 5-door; 107,000 miles
1984 Saab 900 turbo, 3-door; 242,000 miles (RIP
Posts in this Thread:
- Can I do this for a couple of days with the coolant?, bender
, Mon, 18 May 2009 18:39:32- Here is my process for flushing the cooling system..., REM in Seattle, Tue, 19 May 2009 08:49:15 <-- Viewing This Message
- Re: Tap Water in cooling system, BobS, Tue, 19 May 2009 07:43:31
- Re: Can I do this for a couple of days with the coolant?, JimBlake
, Tue, 19 May 2009 07:26:55 - Re: Can I do this for a couple of days with the coolant?, TG, Tue, 19 May 2009 05:47:46
- yeah, thats fine. nm, Simon S, Tue, 19 May 2009 01:00:29
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