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Old 01-06-2021, 02:08 PM   #1
Don S
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Default Lite rust inside block

I removed my top hose to get at the thermostat,because I was experiencing an over heat situation . I checked the thermostat on the stove in a large can of water. Used a laser reader to check when thermostat opened , 192 deg. Too high for a 160 degree thermostat,and for my general needs. I will replace the thermostat,but I noticed looking down the gooseneck that there is a light rusting that I would rather not have.My A is in winter storage . Is there a safe way of neutralizing the rust by filling up the block only ,letting it work for awhile then flushing, without having to start the engine ? What product is safe for this process ?
Thanks Don
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Old 01-07-2021, 03:29 PM   #2
Chuck Sea/Tac
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Default Re: Lite rust inside block

Thermocure
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Old 01-07-2021, 05:35 PM   #3
Don S
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Default Re: Lite rust inside block

No luck here,auto supply stores don't know about this product .
Thanks for the suggestion
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Old 01-07-2021, 06:42 PM   #4
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Default Re: Lite rust inside block

Go online and look at Liquid Intelligence. They do a range of products but you will likely only be interested in their 239 Engine Cooling System Cleaning Kit. They say it comes with a money back guarantee so they must be confident it is good.
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Old 01-07-2021, 07:00 PM   #5
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Default Re: Lite rust inside block

Are you running anti freeze or straight water or ????.
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Old 01-07-2021, 08:07 PM   #6
Don S
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Default Re: Lite rust inside block

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Running distilled water with rust inhibitor. Only use anti freeze for winter starage
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Old 01-07-2021, 08:19 PM   #7
Don S
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Default Re: Lite rust inside block

Synchro , I checked it out on-line, looks interesting, but need those if locally available.
Thanks for your input
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Old 01-07-2021, 09:34 PM   #8
Chris Haynes
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Default Re: Lite rust inside block

I have successfully cleaned and de-rusted my entire cooling system with RUST911.
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Old 01-08-2021, 12:14 AM   #9
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Default Re: Lite rust inside block

Quote:
Originally Posted by Chris Haynes View Post
I have successfully cleaned and de-rusted my entire cooling system with RUST911.
X2

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Old 01-08-2021, 06:15 AM   #10
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Default Re: Lite rust inside block

https://www.amazon.ca/Thermocure-Coo.../dp/B00R74I5UY
Free delivery.
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Old 01-08-2021, 06:05 PM   #11
Don S
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Default Re: Lite rust inside block

I used a product called Kleen -Flo , mixed the container with water and filled the block. After about 1 hour I drained it and flushed with garden hose till clear. I repeated the process . Very little color in the second flushing . I will replace the anti-freeze until spring.
Thanks all for your suggestions
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Old 01-08-2021, 09:42 PM   #12
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Default Re: Lite rust inside block

If there is just a bit of rust on the surface of the water jacket etc it isn't time for panic. Go to your local auto parts store, get a radiator flush kit and use it as directed. Then use a good quality anti-freeze with built in rust inhibitor. If the system is plugged up, that's a different story.
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Old 01-09-2021, 08:22 AM   #13
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Default Re: Lite rust inside block

Your choice but now that you have the rust taken care of and refilled with a 50/50 mix of distilled water and antifreeze leave it in there.

Seems to me the rust inhibitor your using isn't up to snuff.
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Old 01-09-2021, 01:49 PM   #14
Ernie Vitucci
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Default Re: Lite rust inside block

Agree with 1crosscut...I simply use 50/50 antifreeze and it stays green from year to year and the engine runs cool. I do run the Vintage Precision Thermostat housing and the thermostat that they provide...very good system...Ernie in Arizona
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Old 01-09-2021, 02:05 PM   #15
Don S
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Default Re: Lite rust inside block

Ernie,and crosscut , I ordered a Vintage Precision thermostat and housing last week, never really liked the one in the hose , also makes the hose more difficult to instal. Should be good to go this spring.
Thanks all
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Old 01-09-2021, 03:56 PM   #16
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Default Re: Lite rust inside block

Fill the cooling system with vinegar, let it sit for two weeks, or three. Flush and immediately fill with 50/50.
Inexpensive and works.
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