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HD-10 transmission fluid recommendations?

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=185699
Printed Date: 17 May 2022 at 4:49pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com


Topic: HD-10 transmission fluid recommendations?
Posted By: Darkmafia1950
Subject: HD-10 transmission fluid recommendations?
Date Posted: 12 Jan 2022 at 12:18am
Hi, I was wondering if anyone can give me some advice on what transmission fluid type they have used in their machines. 2 HD-10 manuals I have found say use SAE 90 or SAE 140. Then I found another manual that says use SAE 30 or 50 motor oil. I know I have to be picky about oil type due to the neoprene bushings and brass/copper parts used. 



Replies:
Posted By: steve(ill)
Date Posted: 14 Jan 2022 at 6:41pm
SAE 50 wt ..... too many addatives in gear lube

https://www.allischalmers.com/forum/hd10-trans-and-final-drive-oil_topic47870.html" rel="nofollow - https://www.allischalmers.com/forum/hd10-trans-and-final-drive-oil_topic47870.html



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


Posted By: Codger
Date Posted: 14 Jan 2022 at 7:57pm
Both SAE 50 engine oil, and SAE90W gear lube have the same viscosity and can be used in the gearbox and finals if a manual transmission. However with SAE90W I would only use an oil meeting the GL-4 specification. I would not use GL-5 in older units. When GL-5 first came out it was very hard on brass and soft metals due to chemical composition. I've been told this has been rectified, but GL-4 was always safe and remains safe for use in older gearboxes using brass and bronze bushings/bearings/syncronizers, etc.



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