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allischalmers 821 power fluid

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crowfish View Drop Down
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Joined: 28 Mar 2010
Location: Ohio
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    Posted: 28 Mar 2010 at 4:18pm

According to the manual on my 1978 5020 compact tactor the transmission / pto uses AllisChalmers power fluid 821  Does anyone know what this really is?

80/90 gear oil?  Hydraulic oil?  SAE 30?
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Burgie View Drop Down
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Joined: 13 Sep 2009
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Burgie Quote  Post ReplyReply Direct Link To This Post Posted: 28 Mar 2010 at 4:31pm
It is like universal hydralic fluid. 20 weight I think.
"Burgie"
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AC RAY MO. View Drop Down
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Joined: 12 Sep 2009
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Post Options Post Options   Thanks (0) Thanks(0)   Quote AC RAY MO. Quote  Post ReplyReply Direct Link To This Post Posted: 28 Mar 2010 at 5:37pm

we use mfa gp hydralic any universal hydralic should work

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steve(ill) View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 28 Mar 2010 at 5:42pm
821 is a universal tractor fluid. Other companies call it HYtrans or hydraulic- transmission fluid... similar to 20 or 30 wt oil. Has anti foam and anti wear addatives, better than engine oil.
like them all, but collect the little Bs.
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