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Old 05-16-2004, 16:49   #1 (permalink)
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Dirty Radiator?

I bought a new plastic thing that your green radiator stuff goes in because it was all brown and looked terrible. I tipped out as much of the radiator stuff that I could without taking the hose off the bottom and put new stuff in.

It looked so much better to have a clean one with the bright green colour in it but after 2 months the brown stuff is coming back. It starts at the bottom and is slowly getting higher. What is the brown stuff and where is it coming from and how do I stop it? The radiator was replaced 7 months ago. Maybe it needs to be cleaned out?
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Old 05-16-2004, 17:05   #2 (permalink)
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Re: Dirty Radiator?

What model car is it on?

I *think* your talking about the radiator overflow bottle. If so, then yes you should flush out your radiator. It souns like its just dirty water, or maybe some sludge. Do you drive on dirt roads a lot?

Make sure your engine is cold before doing this, or when when you start your car it could crack the block. To flush out your radiator, just take off the bottom radiator hose, and run a hose through it. Put the bottom hose on again, fill it up. I usually do this 2 or even 3 times, depending on how much dirty water comes out the second time. You can run the engine for a little bit, to circulate water out of the engine and into the radiator, so it can be washed out too.

Then you can fill it up with the Green stuff... Dont forget that it needs to be diluted.

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Old 05-17-2004, 05:13   #3 (permalink)
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Re: Dirty Radiator?

Has your cooling system ever has a full flush? (including your block and heater).
It's too easy to go to a radiator shop and get them to give you a full flush out and pressure test.
It's realy not that expensive if your not mechanically minded, and they have the right tools to get all the dirty water out.
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Old 05-19-2004, 06:38   #4 (permalink)
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Re: Dirty Radiator?

my coolant tank is filthy too. i might see how i go flushing it out tomorrow. better make sure i have some coolant to fill it up with after though!
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Old 05-19-2004, 07:37   #5 (permalink)
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Re: Dirty Radiator?

Originally Posted by Klawsterfobik
Do you drive on dirt roads a lot?

how would this make a difference as the cooling system is a sealed unit.
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