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Radiator Flush Question

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Old May 4, 2005 | 09:48 AM
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Default Radiator Flush Question

The drain plug on my radiator is something I have never seen before. Looks like a special tool needs to be used to open it but it has a recess in the middle which looks like it would take a small hex key. The service manual and pictures doesn't mention anything about this, just says to open it.
Any ideas on how to open this thing would be appreciated. thanks
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Old May 4, 2005 | 10:13 AM
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1/4" drive will fit.
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Old May 4, 2005 | 10:30 AM
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Is the rad flush something anyone could do?
Do you just drain the coolant and refill?

Where is the drain plug located?
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Old May 4, 2005 | 12:05 PM
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The drain is on lower right (passenger side) of radiator. The service manual gives specific instructions on refilling to avoid air in the system but doesn't seem to complicated.
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Old May 4, 2005 | 03:17 PM
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Very simple operation. A couple key things to remember. DO NOT use any flush products as many of them can have a bad reaction when mixed with Dex-Cool. Flush with fresh water or distilled water. Make sure you use a 50-50 mixture of Dex-Cool and distilled water when refilling.
This link has some good procedures to follow:
http://forums.corvetteforum.com/show...ght=flush+fill
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