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Transmission Oil Selection

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NorthState Machine View Drop Down
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Joined: 05 Mar 2021
Location: Maine
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    Posted: 16 Nov 2021 at 9:43am
Hello All,
Quick question for the group:

1965 Fiat Allis 545 Wheel Loader- has an Allison Torqmatic Transmission TT2220-1

Would anyone know what this "should" take for fluid? I've heard Dextron ATF, to 10W, to 15-40? Seems like when i ask the local shops too, there seems to be differences there as well; I was leaning to the 15-40 personally-but just want to make sure i dont hurt it by putting the wrong fluid in it.


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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: 16 Nov 2021 at 9:53am
A variety of oils will work... Some use Dextron, some use 10wt hyd, some use 15-40 engine oil... thicker oil can help on older trans with internal wear...



Like them all, but love the "B"s.
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NorthState Machine View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote NorthState Machine Quote  Post ReplyReply Direct Link To This Post Posted: 16 Nov 2021 at 2:38pm
Thank you Steve! Much appreciated, I guess there seems to be a lot of folks using different oils, but that must mean it's not as critical as I was worried about.
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