Radiator flush

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May 14, 2014 | 06:34 AM

20Z0602

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Instructor

Joined: Oct 2006

Posts: 242

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From: Weddington, North Carolina

why such a small amount?

I am in the process of flushing the radiator out on the new to me 02 Z with 13,500 miles. I removed the recovery tank cap,opened the rad cockpit and let her drain. It looks like this only yielded me a little over 3 qts of fluid not the 6.5 it seems most people get. So to make sure it was under 4qts I refilled the system with water and it did not take a full gallon to get to the full cold mark. What is wrong with my system to only have that much come out?

Thanks Jim

Last edited by 20Z0602; May 14, 2014 at 09:42 AM. Reason: title

May 14, 2014 | 10:21 AM

Dcollins3208

Burning Brakes

Joined: Oct 2013

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I haven't done it on the C5 yet but on my truck I had to pull a coolant hose off and remove the thermostat... Since it's closed you still have a lot of coolant sitting in the block itself

May 14, 2014 | 10:39 AM

20Z0602

Thread Starter

Instructor

Joined: Oct 2006

Posts: 242

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From: Weddington, North Carolina

Quote:

Originally Posted by Dcollins3208

I haven't done it on the C5 yet but on my truck I had to pull a coolant hose off and remove the thermostat... Since it's closed you still have a lot of coolant sitting in the block itself

Thank you for the reply,you are correct. I am just a little confused as to why under 4 qts came out when most have 6.5 qts come out at the initial drain point.

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