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Proper way to flush a cooling system rid of old coolant?

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Old Dec 10, 2002 | 06:16 PM
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Default Proper way to flush a cooling system rid of old coolant?

What's the proper way to flush a cooling system to rid of all the old coolant?

TIA
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Old Dec 10, 2002 | 07:49 PM
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Do a search with "flush" and "xviper" as keywords. If memory serves, he dished up a nice description with pics on what to do.
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Old Dec 10, 2002 | 08:50 PM
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I don't think the advanced search works so here:
https://www.s2ki.com/forums/showthread.php?...&threadid=86811
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Old Dec 11, 2002 | 12:31 AM
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Originally posted by xviper
I don't think the advanced search works so here:
https://www.s2ki.com/forums/showthread.php?...&threadid=86811
thanks! I tried the search and got nada.
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Old Dec 11, 2002 | 09:26 PM
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there is a white knob on the bottom of your car, if you unscrew it, all the coolant will drain.
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Old Dec 11, 2002 | 09:31 PM
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Originally posted by swtazn97
there is a white knob on the bottom of your car, if you unscrew it, all the coolant will drain.
It's not quite that simple. That white knob is the drain valve at the bottom of the radiator. This is NOT the lowest part of the cooling system. You still need to drain the coolant that sits below this level. You must remove the engine block drain plug that is situated on the lower right side of the engine block near the engine mount. As I've indicated in my DIY thread, those with a block heater will find it easier to leave this drain alone as the block heater is plugged into it. My thread shows that you can get most of the remaining coolant out by disconnecting the lower oil filter cooling line.
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Old Dec 30, 2009 | 02:56 PM
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Hate to bring this thread back to life. But the link doesnt work, and I cannot find a DIY thread on draining the coolant. When I get back i will be replacing my radiator. So I will do a full radiator replacement thread, but I would love to have the DIY to go off of first.
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Old Dec 30, 2009 | 03:00 PM
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i drain my rad every 30,000miles.havent had any problems yet,and dont have to bleed it..
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Old Dec 31, 2009 | 03:41 PM
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Originally Posted by Skatethesea,Dec 30 2009, 03:56 PM
Hate to bring this thread back to life. But the link doesnt work, and I cannot find a DIY thread on draining the coolant. When I get back i will be replacing my radiator. So I will do a full radiator replacement thread, but I would love to have the DIY to go off of first.
After the car has completely cooled off:

Loosen the drain plug from the bottom of the radiator after taking off your rad cap.

Remove the 19mm drain plug from the block. It's near the header.

Replace/retighten drain plugs. Refill, bleed the air out, enjoy.


The procedure is actually in your owner's manual. It's very simple.



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Old Dec 31, 2009 | 03:41 PM
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Originally Posted by jimbosr1,Dec 30 2009, 04:00 PM
i drain my rad every 30,000miles.havent had any problems yet,and dont have to bleed it..
no...you choose not to bleed it. You still do have the bleed it.
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