Flushing Radiator of HD16 tractor
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Construction and other equipment
Forum Description: everything else with orange (or yellow) paint
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=143538
Printed Date: 19 Aug 2025 at 6:32am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: Flushing Radiator of HD16 tractor
Posted By: jerbob
Subject: Flushing Radiator of HD16 tractor
Date Posted: 17 Oct 2017 at 10:27am
Hello Everyone.
First, glad to hear Mel is all right and assuming his family as well. Be safe out here Mel.
Question
I am draining the radiator on my HD16DC, a 1961, and would like to flush out the radiator prior to refilling it. I read in the manual about flushing and cleaning with Sal Soda. Has anyone used any type of radiator flushing cleaning solution on any of your tractors prior to refilling with clean antifreeze coolant? The coolant in the radiator right now looks brown and I want to start fresh and clean.
Is so please advise me. Otherwise I will just flush with clean water and leave it at that.
My thanks for sure.
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Replies:
Posted By: DMiller
Date Posted: 17 Oct 2017 at 10:33am
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Just flush with clear water, most other solutions have to be also flushed with clear water.
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Posted By: jerbob
Date Posted: 17 Oct 2017 at 1:28pm
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Thank you. And easier. I'm guilty of overthinking some of this.
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Posted By: dustydoo
Date Posted: 18 Oct 2017 at 4:58am
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If you can remove the thermostat and reinstall housing the flushing will be more effective . Also if you can flush from top to bottom is reversing the normal coolant flow picking up more debris .
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Posted By: jerbob
Date Posted: 18 Oct 2017 at 6:41am
Posted By: LeonR2013
Date Posted: 21 Oct 2017 at 8:22am
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I've also used non-suds washing soap. Cleans better and flushes out easier. Lost an oil cooler on my road truck one time and I thought I got it flushed real good. Didn't. Ran it a couple weeks, no issues, and then Oh heck. It had polished the inside of the radiator and didn't cause a problem.
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Posted By: jerbob
Date Posted: 21 Oct 2017 at 4:00pm
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I'm thinking just a good clean water flush at this point. Better than anything this old girls had in 40 years I bet.
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