Farm Equipment - 303 or hy-tran

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303 or hy-tran

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=141097
Printed Date: 31 Dec 2025 at 8:39pm
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Topic: 303 or hy-tran

Posted By: orange-is-power
Subject: 303 or hy-tran
Date Posted: 04 Aug 2017 at 3:35am

Can get either the '303' or universal 'hy-tran' fluid at the store. Both say they meet A-C specs. Which is better suited for a D15, D17 Series IV, or 175? Thanks.

Replies:

Posted By: WF owner
Date Posted: 04 Aug 2017 at 5:33am

Look at the container. It should give you the list of all manufacturers assorted requirements for that manufacturer. If is says it meets the requirements for Allis Chalmers Power Fluid 821 XL, that is what you want.

Posted By: Travis2766
Date Posted: 04 Aug 2017 at 6:07am

Hy-tran has a longer life and doesn't break down as fast as 303. 303 should be changed more often than hy-tran in tractors. I use the hy-tran in my d17 iv, I was told 303 is for things like log splitters and small equipment with systems that don't create a lot of heat.

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190XT Series III, D17 Series IV, D15 Series II, All Crop 66, Rotobaler.