Eaton 10 speed oil capacity

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by mile marker 27, Jun 7, 2021.

  1. mile marker 27

    mile marker 27 Road Train Member

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    Gonna add a pto to my truck and while doing so, I’m gonna change the oil in my transmission. Looking for the capacity of a 10 speed OD.
     
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  3. Bakerman

    Bakerman Road Train Member

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    Fill it until it comes out the fill hole, about 3 gallons-give or take.
     
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  4. WrenchWrenchWrench

    WrenchWrenchWrench Light Load Member

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    Get a five gallon bucket and you'll have a little left over after the PTO is installed to top off your diffs or steer hubs
     
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  5. jamespmack

    jamespmack Road Train Member

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    X2 and cheaper than gallon jugs. Next question brand. Lots of opinions. But as long as it meets manufacturers spec. Your good.
     
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  6. jamespmack

    jamespmack Road Train Member

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    I used to remember all this stuff. But that was running a shop and billing invoices. Now its just full.
     
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  7. mile marker 27

    mile marker 27 Road Train Member

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    Well, we discussed this the last time I did a pto and the majority seemed to recommend 50wt synthetic. I mentioned that to a very knowledgeable guy who builds lots of dump trucks and own a semi truck salvage yard. I can’t remember what he told me to use but I did use it and I think it was, Mystik 80w-90(old stuff). I’ll have to double check that but I can assure you, I’ve had no leaks and no shifting issues in cold or warm weather. Think he told me, it’s(80w-90) a lot less apt to leak.
     
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  8. Lazer

    Lazer Road Train Member

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    50w synthetic drive line oil.
     
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  9. jamespmack

    jamespmack Road Train Member

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    He is right with older eatons. 80/90 fine. Have had a few customers run it. Really warm up is more important. Let it get flowing. But yearly drains.

    Idk I'm happy with 50w synthetic in a Rtlo and no PTO.

    Still have half a barrel of 85w/140 Hydrotex that some heavy haulers swear by for trailer hubs and rear diffs. They were not looking for fuel milage.
     
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  10. Lazer

    Lazer Road Train Member

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    As you are adding a pto, after you fill it, go for a short drive, this give the air in the cooler lines a chance to get worked out. Then park for a spell with everything off and check and top off transmission again.
     
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