‘45 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=187151
Printed Date: 25 Jul 2025 at 7:22am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: ‘45 power steering oil
Posted By: captaindana
Subject: ‘45 power steering oil
Date Posted: 20 Mar 2022 at 3:55am
So what kind of oil should I use in the power steering oil reservoir? My books do not say? Thanks Amigos! Dana
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Blue Skies and Tail Winds
Dana
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Replies:
Posted By: steve(ill)
Date Posted: 20 Mar 2022 at 9:34am
about anything works... Some use ATF, some use 10wt... some use Universal tractor fluid... You got the UTF in several other places.. I would stick with that.
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Like them all, but love the "B"s.
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Posted By: captaindana
Date Posted: 20 Mar 2022 at 9:42am
So you think plain hydraulic fluid or do you mean hydrants. Thanks. Dana
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Blue Skies and Tail Winds
Dana
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Posted By: steve(ill)
Date Posted: 20 Mar 2022 at 9:47am
We uses universal tractor fluid in our Backhoe... same thing we put in the hydraulics and transmission. Hytrans / CAT TO2/ Allis 821 / etc. ........... im sure some guys use "red" automatic trans fluid (ATF).
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Like them all, but love the "B"s.
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Posted By: steve(ill)
Date Posted: 20 Mar 2022 at 9:49am
If you decide to use Automotive Transmission fluid (RED)... I would stick with the OLD ATF type and not the new MERCON LV or others that have a lot of ADDATIVES in them.
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Like them all, but love the "B"s.
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Posted By: SteveM C/IL
Date Posted: 20 Mar 2022 at 2:15pm
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My 45 had red fluid. It got switched to 821 and seems fine. My end loader uses Dexron in trans (Allison)...I see where the rebuilders are recommending 15w40 oil in same trans....Who knows?
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Posted By: steve(ill)
Date Posted: 20 Mar 2022 at 4:33pm
40 years ago i worked for FiatAllis Construction Division.. Big Mines had dozens of tractors. All the engines used 15W40... There was a big push to get the transmissions verified on 15w40 to standardize on the oil.... We had a couple dozers running 15w40 in the hydraulics instead of 10 or 20 wt straight oil.
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Like them all, but love the "B"s.
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Posted By: Ed (Ont)
Date Posted: 20 Mar 2022 at 5:03pm
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Lots of trucks run 15-40 in the steering especially the construction guys (gravel haulers). With the big 445 -22.5 rubber on steers it makes the steering work pretty hard. I stuck to power steering fluid and had good luck with that over the years.
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Posted By: Stan IL&TN
Date Posted: 20 Mar 2022 at 9:04pm
My fluid is red in my WD45 so it's ATF or cool-aid.
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1957 WD45 dad's first AC
1968 one-seventy
1956 F40 Ferguson
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