Farm Equipment - Coolant conditioner

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Coolant conditioner

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=195712
Printed Date: 23 Aug 2025 at 6:42pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: Coolant conditioner

Posted By: GWS
Subject: Coolant conditioner
Date Posted: 16 Jun 2023 at 4:41pm

What's your favorite (and maybe least favorite?) coolant conditioner? I've always thought it was a great, cheap, insurance policy for these older engines, yet I've never used them. Going to start this year.

Thanks, George

Replies:

Posted By: Steve in NJ
Date Posted: 16 Jun 2023 at 4:53pm

I've always used NALCOOL in my gas or diesel engines. Works with your favorite Antifreeze. I haven't purchased it in a while, but used to get it at Napa in a White n' Blue plastic bottle. You didn't need to add a lot to the coolant system. Keeps the systems pretty much rust free. I use it in my Classic Cars & Hotrods cause they sit over the Winter, and I fire em' up once in a while during the Winter months just to circulate the coolant. Some premix Antifreeze's I believe have rust inhibitors added to them now. Cooling system conditioners have come a long way especially for diesels.

Steve@B&B

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39'RC, 43'WC, 48'B, 49'G, 50'WF, 65 Big 10, 67'B-110, 75'716H, 2-620's, & a Motorhead wife

Posted By: KJCHRIS
Date Posted: 17 Jun 2023 at 11:54pm

I've quit using any and have switched to the newer extended life premixed coolants.

Drain the cooling system, flush a couple times and refill with new style coolant like the newer equipment calls for. We used to use Nal Cool products at work and home, until about 15 years ago.

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AC 200, CAH, AC185D bareback, AC 180D bareback, D17 III, WF. D17 Blackbar grill, NF. D15 SFW. Case 1175 CAH, Bobcat 543B,

Posted By: Ky.Allis
Date Posted: 18 Jun 2023 at 1:31pm

Using a conditioner is guesswork unless you test the coolant. Make it simple and buy a good pre-mixed coolant with all the additives you need. I use JD " coolguard" because they're the only place that's half way close. Also makes it easy if all you want to do is "top off" the radiator.