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Old 02-12-2018, 06:16 PM   #1
HammondRacing
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Default Water in radiator rusty looking

What do you all put in water in radiator to keep from getting rusty looking? I took motor out and apart for some head work and the water looks like it came out of a old tractor that been setting for years. Motor was only together for 9 months. It is a dart block
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Old 02-12-2018, 06:25 PM   #2
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Default Re: Water in radiator rusty looking

I use Water Wetter it seems to work pretty good.
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Old 02-12-2018, 06:47 PM   #3
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Default Re: Water in radiator rusty looking

How do you clean out a rusty cooling system like the one described above. I'm looking to clean it in the car, not tear down the engine. Thanks
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Old 02-12-2018, 09:28 PM   #4
David Lee
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Default Re: Water in radiator rusty looking

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Originally Posted by 4406mopar View Post
How do you clean out a rusty cooling system like the one described above. I'm looking to clean it in the car, not tear down the engine. Thanks
what is the material of the core?
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Old 02-12-2018, 09:40 PM   #5
paul romeo
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Default Re: Water in radiator rusty looking

I have not tried this product Thermocure made by evapo-rust but have seen it on tv looks to work excellent. Paul
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Old 02-13-2018, 09:27 AM   #6
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Default Re: Water in radiator rusty looking

https://www.summitracing.com/parts/jgr-50030

We used this for a while . Still have 5 or 6 bottles around here somewhere. Works well, but it foams a little in a unpressurized system ..We only used half a bottle per fill
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Old 02-13-2018, 10:41 AM   #7
Mike Pearson
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Default Re: Water in radiator rusty looking

I never leave the water in my engine
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Old 02-13-2018, 12:43 PM   #8
Jeff Stout
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Default Re: Water in radiator rusty looking

I thought using thread cutting oil in radiator. 1 shot glass worth
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Old 02-13-2018, 12:45 PM   #9
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Default Re: Water in radiator rusty looking

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Originally Posted by 4406mopar View Post
How do you clean out a rusty cooling system like the one described above. I'm looking to clean it in the car, not tear down the engine. Thanks
If you have an electric pump on it, drain it including pulling the plugs in the block. Refill with fresh water and a can of some type of cooling system cleaner. Circulate that for awhile and drain again. Circulate and run clean water through it until it runs clean. Refill and include a can of additive. Without block drains and an electric pump, it becomes a little more involved.

I used Justice Brothers products because I sold them and they worked well. Any quality anti-rust product should prevent the coolant from turning to mud.
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Old 02-13-2018, 03:07 PM   #10
Jeff Stout
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Default Re: Water in radiator rusty looking

Could you use CLR safely to clean? I always thought if you drain water and let metal sit exposed to air it would promote rust
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