WD45 Factory Power Steering Oil
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=192973
Printed Date: 31 Oct 2025 at 5:54am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: WD45 Factory Power Steering Oil
Posted By: captaindana
Subject: WD45 Factory Power Steering Oil
Date Posted: 18 Jan 2023 at 1:51pm
Hello y’all I just drained all the oil and my factory power steering as I replaced some hoses the book doesn’t say much what kind of oil do we put back in? thank you. Capt D
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Blue Skies and Tail Winds
Dana
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Replies:
Posted By: DaveWisc.
Date Posted: 18 Jan 2023 at 4:09pm
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I used 821 type from a farm store
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Posted By: captaindana
Date Posted: 18 Jan 2023 at 6:00pm
That was my guess. Manuals I have do not mention power steering. Thanks Dana
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Blue Skies and Tail Winds
Dana
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Posted By: Darb210
Date Posted: 18 Jan 2023 at 6:21pm
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pretty sure it calls for 20 or 30wt non detergent oil, same as did the hydraulic system at the time, so i would agree with the 821 fluid as well
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Posted By: 55allis
Date Posted: 18 Jan 2023 at 9:27pm
I run regular 20W John Deere hydraulic oil in my 45D and it seems to work good…
Which is equivalent (I think) to the 821 oil.
I hope this helps……
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1955 AC WD45 diesel with D262 repower, 1949 AC WD45
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Posted By: Robert Musgrave
Date Posted: 21 Jan 2023 at 3:58pm
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Back in the day, my dad ran SAE 20W-20 in the 1949 WD year 'round--crankcase, hydraulics, oil bath air cleaner, and after-market Char-Lynn Power Steering unit. Life was simplier then........... R. Musgrave
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Posted By: captaindana
Date Posted: 22 Jan 2023 at 4:36am
Thanks all. I filled with hydrants. New hoses. Man she is some amazing piece of works. This system (1956) steers so much better than my 1961 D19. Seems they went backwards on this one idk. I’d say both of my ps ‘45’s steer as well as my 170 or my 175. But my ‘17 III and 19 both steer inferior to the rest.
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Blue Skies and Tail Winds
Dana
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