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Old 11-15-2012, 08:12 PM   #1
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Radiator leaking

Has anyone tried or suggest stop leak in a leaking aluminum radiator?

thanks.
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Old 11-15-2012, 08:38 PM   #2
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Don't do it. I tried an it caused the engine to run
Warm finally change the radiator and it must of way 20 pounds heavier than replacement. Just my 2 cents. Good luck.
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Old 11-15-2012, 08:43 PM   #3
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What motor?
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Old 11-16-2012, 08:17 AM   #4
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get a new or rebuilt radiator. It's shot. If you pressure test it will leak everywhere. Do not try and nickle and dime it. Just suck it up and get it fixed.
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Old 11-16-2012, 09:29 AM   #5
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Don't use it !!! It will cause more problems than you ever dreamed of.......
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Old 11-16-2012, 09:55 AM   #6
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I have used Alumaseal a couple of times and it has worked well. This was on cars, not motorhomes. I don't know of any problems caused by its use in my experience.
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Old 11-16-2012, 10:06 AM   #7
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What about using Stop Leak in a 1988 Dodge 360 radiator?

I have a small area near the bottom of the rad that has that white powder trace, would Stop Leak help OR cause problems?
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Old 11-16-2012, 01:18 PM   #8
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Quote:
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Don't use it !!! It will cause more problems than you ever dreamed of.......
Problems such as.......Name a few for us.....
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Old 11-16-2012, 01:49 PM   #9
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Originally Posted by Oldkarphart

Problems such as.......Name a few for us.....
Possibly clogging oil cooler, coolant passages.
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Old 11-16-2012, 03:38 PM   #10
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Cummins Operation & Maintenance Manual ISB

Cooling System Sealing Additives
Do not use sealing additives in the cooling system. These additives will:
Build up in coolant low-flow areas
Plug the radiator and oil cooler
Possibly damage the water pump seal

Also cautions about using Soluble Oils in the cooling system.
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Old 11-16-2012, 07:16 PM   #11
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525 Cat

Has anyone used C,G, and J in Gadsden,AL for radiator replacement? If so, what was the results?

Jerry
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Old 11-16-2012, 07:32 PM   #12
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For what it's worth years ago I used stop leak type products and they were only a temporary fix. Now that I'm older and somewhat wiser I'd probably not use that type of product but would do a real repair especially on a newish motor home.
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Old 11-17-2012, 12:23 AM   #13
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For what it's worth years ago I used stop leak type products and they were only a temporary fix. Now that I'm older and somewhat wiser I'd probably not use that type of product but would do a real repair especially on a newish motor home.
Temporary fix, not according to all the Stop Leak type manufacturers.

Apparently there is plenty of users who have stopped small leaks for a long time/permanently.

My RV is only worth $10k, so spending $1,000 to $1,500 dollars changing the radiator, water pump, etc... just because you have a small leak....

Hmmm, sounds like $10 might be worth the try and save myself over $1000 dollars of repairs just for a small leak.

I figure for a last ditch effort, might be just worth the effort (as long as the product is compatible with your engine/rad...)
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Old 11-17-2012, 09:31 AM   #14
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Thanks for everyone's response
Jerry
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