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Old 07-28-2007, 12:22 PM   #11
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I got it flushed yesterday and all the bubbles seem to be out, but here'* my question. I bought 3 (1gallon) things of the antifreeze. I only ended up using one, because all the water left in the block, etc. The car is not overheating, but is this a problem to not have a correct ratio of coolant/water? The temp. acts just fine, just like normal.
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Old 07-28-2007, 07:06 PM   #12
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I went through the owner'* manual, as well as the GM servicing disk, and those show the cooling system capacity as 10 quarts. As you have managed to get in 4, you're only at a 40/60 instead of the recommended 50/50.

As it is, you'd have less corrosion protection, as well as less boil-over and freezing protection. If the system is full, I'd suggest draining maybe 3/4th or so out of the radiator, and then refilling with 100% antifreeze. That should get you around the recommended amount.
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Old 08-06-2007, 05:36 PM   #13
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I know this has been covered before but say it again. Can I flush the system by draining the radiator and putting Prestone in? Seems like if a guy did this a few times eventually
it would be all green. Do you drain the radiator by taking the lower hose off?
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Old 08-06-2007, 05:40 PM   #14
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Nope, just open the draincock.
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Old 08-06-2007, 07:37 PM   #15
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Default Re: flush cooling system

Quote:
Originally Posted by HLB
I know this has been covered before but say it again. Can I flush the system by draining the radiator and putting Prestone in? Seems like if a guy did this a few times eventually
it would be all green. Do you drain the radiator by taking the lower hose off?
I would think you would want to flush it all. Maybe if you already had green in it, you could just drain the radiator every few months or something. I know there is one member here that said he does it every six months. As far as the draining, I would do the hose. The petcock is plastic, so there is a chance of breakage.
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Old 08-06-2007, 11:01 PM   #16
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Default Re: flush cooling system

Quote:
Originally Posted by Grimm
The petcock is plastic, so there is a chance of breakage.
plus, i couldnt even find the darn thing.
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