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HD-4 oils

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=117164
Printed Date: 27 Jul 2025 at 12:04pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: HD-4 oils

Posted By: rodnil
Subject: HD-4 oils
Date Posted: 05 Jan 2016 at 10:01pm

I have an HD-4 and I'm attempting to identify the correct oils to use in it. The torque converter & shuttle clutch in the operators manual says to use type "A" suffix A transmission oil. What is this in todays oils? Same with the transmission oil. The manual says to use SAE 20-20W
And what is the correct oil for the hydraulic system. Are any of these oils need to be non-foaming oils? My farm stores and local NAPA store can not help me identify the correct oils to use. Any and all help is welcomed. Rodney

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Replies:

Posted By: JohnCO
Date Posted: 05 Jan 2016 at 10:36pm

Type A is that red automatic transmission fluid, I think it is about 10 weight. 20-20 would probably work but it might be too thick for winter use, it might take a bit of running before you could move the machine.

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"If at first you don't succeed, get a bigger hammer"
Allis Express participant

Posted By: Coke-in-MN
Date Posted: 06 Jan 2016 at 6:25am

Type A is Dextron - GM transmission -

20 - 20 I think I would use Universal Tractor Hyd fluid Hi Tran - or other such universal oil

For Hyd use YES a NON FOAMING oil there 10/30 motor oil or the Universal oil again

final reductions 80/90 gear oil

As the torque converter is involved I would stick to the ATF in clutches and fwd/rev section- a good quality oil as it needs to flow freely in all temps.

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Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something.
"Challenges are what make life interesting; overcoming them is what makes life meaningful."

Posted By: pinball
Date Posted: 06 Jan 2016 at 9:00am

Under my lid of the hydraulic tank there is a list of all oils for my h4. TYPE A TRANSMISSION FLUID FOR THE TRANSMISSION AND 30 WEIGHT OIL FOR THE HYDRAULICS. I just had to remove my hydraulic controls to fix some leaks. Went to my local farm and home store and bought 30 weight to fill it up. So far its has been fine. Norm