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Allis Chalmers Discussion Forum

Transmission Oil

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Mark Haase

02-20-2008 17:24:14

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What kind of oil do I need to put in the transmission on a CA Allis Chalmers?????

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Bob Huntress

02-20-2008 21:55:10

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 Re: Transmission Oil in reply to Mark Haase, 02-20-2008 17:24:14  
I have heard the same farm equipment rumors that Steve may have. That in the early 1940's Allis sold that same transmission to both the Army and Navy as being lubricated with the same oil that the engine used. Granted I can see how that would be of value, in that the military would only need to stock the one oil, as opposed to both. Most of the versions that I have heard tell of all the oils, including the hydraulics, being the same on the ones sold to the military including the B, C and CA. I don't know if that is true, however, and I have my doubts. Even if the story is true, it would not automatically mean that models sold after the war to civilans were the same.

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Dick L

02-21-2008 07:21:26

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 Rumor Has It in reply to Bob Huntress, 02-20-2008 21:55:10  
Rumor has it that what they printed in the manual, beside the number 11, that went with the tractor was what Allis Chalmers actually did recommend. Just a Rumor now and I would not want you to start believing rumors.

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Bob Huntress

02-21-2008 12:52:40

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 Re: Rumor Has It in reply to Dick L, 02-21-2008 07:21:26  
Thanks, it makes sense, but I'll probably continue using Hy Trans, anyway. Other than allow the operator to consoladate their lubricants, do you have any idea why they would use such a light oil?

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Dick L

02-21-2008 13:39:28

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 Re: Rumor Has It in reply to Bob Huntress, 02-21-2008 12:52:40  
In the 50's and before, 20w non detergent oil was used in hydraulic molding machines as well as tractors. In the late 50's and early 60's oil companies were selling 20w non detergent oils with anti wear additives.
I assume the reason was that the oil companies had not addressed the wear and sludge problems caused from heating standard engine oils in hydraulic systems.

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02-20-2008 19:46:02

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 Re: Transmission Oil in reply to Mark Haase, 02-20-2008 17:24:14  
yes, universal hydraulic- transmission fluid or some type Hy-Trans is the best. original was 20 wt motor oil, but the above is much better for gears and hydraulics.

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02-20-2008 18:15:41

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 Re: Transmission Oil in reply to Mark Haase, 02-20-2008 17:24:14  
Well on my C I use hy-tran types of oil since thats also the hyds. It would work just fine in a CA also

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