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6080 brake fluid?

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=207539
Printed Date: 27 Jul 2025 at 6:22am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com


Topic: 6080 brake fluid?
Posted By: skateboarder68
Subject: 6080 brake fluid?
Date Posted: 24 Jul 2025 at 6:41pm
Book says 10w10. Found a quart of non detergent 10 weight oil at O’Reileys. Will this work? Thanks

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Orange & Silver still earnin their keep on the farm: R62, Series IV D17 nf, 185, 6080, 6080 fwa, 220, 1968 D21, 7045, DT240.



Replies:
Posted By: Lynn Marshall
Date Posted: 24 Jul 2025 at 8:40pm
Not saying that it won't work, but I would just use some regular hydraulic oil. Just don't use brake fluid.


Posted By: DrAllis
Date Posted: 25 Jul 2025 at 8:20am
We always used ATF/Dexron and kept a couple of 1 quart jogs on the shelf just for 6000 series brakes.


Posted By: Hurst
Date Posted: 25 Jul 2025 at 9:27am
It's a mineral oil brake fluid.  New Holland still sells it for around $20 a quart.  NH part number is 73340450.  LHM brake fluid is what it would be called in the automotive world.  I think some European car manufacturers used it for a while, like Citroen.  It's designed to use a mineral oil because if any bypasses the seals in the axles, it will mix with the hydraulic oil in the rear end without issue.  If you are losing a good amount of fluid, you may be due to replace the piston seals in the trumpets. 

Hurst


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1979 Allis Chalmers 7000
5800 Hours


Posted By: DonDittmar
Date Posted: 25 Jul 2025 at 10:27am
I think Massey used the same typ of mineral fluid in their tractors



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Experience is a fancy name for past mistakes. "Great moments are born from great opportunity"

1968 D15D,1962 D19D
Also 1965 Cub Loboy and 1958 JD 720 Diesel Pony Start


Posted By: Ky.Allis
Date Posted: 25 Jul 2025 at 4:12pm
Why did AC make this oddball? Fiat design?


Posted By: steve(ill)
Date Posted: 25 Jul 2025 at 4:24pm
IM with the DR.. and OLDER type of trans fluid is 10w and would be good.. Not the NEW MERCON LV or Dextron 6.. ETC... Use the older stuff that is not synthetic and full of addatives, detergents.... Type A, F, Dextron 1-2, etc.

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Like them all, but love the "B"s.



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