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Old 06-24-2006, 03:47 PM
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massive crusty corrosion on/in radiator

I have an all aluminum Griffin radiator and today I tried to pull the cap off and it was stuck on there really good. I finally smacked it off and inside it's a crust corroded mess. I can't figure out why though? There must be some kind of a reaction going on in there but all I use is water and anti-freeze mix, no flushers or additives. Must be something reacting with the aluminum?

It almost looks like it might be slowly eating away at it?

What is the best way to clean this mess up? What about preventing it?

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Old 06-24-2006, 04:03 PM
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Ouch! I feel your pain. As for cleaning it up I don't know, maybe take it to a radiator shop and have it cleaned. As for prevention, I would use distilled not tap water and antifreeze. City tap water has too much chlorine and well water sometimes contains alot of minerals. Call or email Griffin, maybe their tech guys can help.
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Old 06-24-2006, 04:40 PM
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Quote:
Originally Posted by PapaWrench
Ouch! I feel your pain. As for cleaning it up I don't know, maybe take it to a radiator shop and have it cleaned. As for prevention, I would use distilled not tap water and antifreeze. City tap water has too much chlorine and well water sometimes contains alot of minerals. Call or email Griffin, maybe their tech guys can help.
Thanks for the advice, I think you may be right, I probably was a little careless about the water i used and perhaps i dont have much antifreeze in there.

I'm hoping there's some kind of cleaner or solvent out there that will help clean it up though, it's nasty stuff and im having to scrape it off the cap with a pointy object. I can't imagine what i have to do to get the inside clean
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Old 07-13-2006, 01:20 AM
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Can anyone else give me some input on cleaning the corrosion out? I've had the truck layed up because im painting it but I'm going to need to get that garbage cleaned out before I get her on the road again. Do they make some sort of a solvent or solution that will dissolve it or cut it out?
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Old 07-13-2006, 03:07 AM
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Doc here,

If it's like battery corrosion , White powder like stuff..

Ground the radiator well with copper braid wire and aluminum bonding paste..You have electrolysis going on there..from the dissimilar metals..

And your right..It will eat metal faster than acid..You need to now inspect the rest of the cooling system.

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Old 07-13-2006, 12:08 PM
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Thanks doc, but what about the inside? That's the part im worried about. I know im going to need to flush it out really well but I don't know what the flush it with to try to kill the corrosion
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Old 07-13-2006, 12:16 PM
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I would get the manufacturer's advice.
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Old 07-18-2006, 12:54 PM
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Do you guys think a baking soda/water solution would help? I am going to try calling them but I thought the solution to the problem would be a little more well known since radiatior corrosion does happen.
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