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  1. #1
    New Member
    Join Date
    Feb 2014
    Posts
    6
    Location
    Dickson,TN
    Tractor
    Allis 5050, JD 1050

    Default Engine Oil in transmissions ??

    I just purchased an Allis Fiat 5050. Before starting to use it, I wanted to replace all the fluids, it's been sitting idle for months. I got the operators manual today, and under engine oil it says Multi-viscosity "Allis-Chalmers Power Lube 15-40. I'm using Rotella 15-40, and have been for years, so no problem there. But what is really confusing me, is that under Transmission & Hydraulic Oil, it also says to use "Allis-Chalmers Power Lube 15-40. Have I been around automatic transmissions to long ? Does it seem right to use engine oil in the transmission and hydraulics systems ???

  2. #2
    Platinum Member
    Join Date
    Oct 2012
    Posts
    628
    Location
    Southern Utah
    Tractor
    John Deere 3120

    Default Re: Engine Oil in transmissions ??

    I'm thinking typo? Dang, I'd want to triple-check that with some experts before proceeding.

  3. #3
    Elite Member
    Join Date
    Apr 2000
    Posts
    3,733
    Location
    Grayson County, TX
    Tractor
    Kubota B2710

    Default Re: Engine Oil in transmissions ??

    My Scag ZTR calls for 20-50 motor oil in the hydro and that is what I use.
    Alan L., TX
    South of Bugtussle
    North of Mustang
    On the banks of Buck Creek
    We don't rent pigs.

  4. #4
    Veteran Member MHarryE's Avatar
    Join Date
    Feb 2009
    Posts
    1,938
    Location
    Northeastern Minnesota
    Tractor
    JD 7720; Kubota M135GX, NH TS115A; JD 6230; Kubota L6060

    Default

    Engine oil makes excellent hydraulic oil except for one thing - it is very expensive in comparison. Don't be afraid to use it. The company I retired from - yellow machines, start with Cat..., actually ships some machines to high ambient temp dealers (Middle East) filled with 15W-40 and all of the medium and small equipment lines specify 15W-40 in ambient temperatures exceeding 104 Fahrenheit (40 Celsius).
    JD7720; KubotaM135GX; NH TS115A; JD6230; KubotaL5740

  5. #5
    Veteran Member
    Join Date
    Nov 2012
    Posts
    1,479
    Location
    Hawthorne, FL
    Tractor
    Kubota L285

    Default

    Several older tractors used 10w30 or 15w40 in engine and hydraulics. I think I even read some older Skid steers did as well. Makes life easier when you can just buy a couple 5 gallon buckets of it to keep around.

  6. #6
    Super Member
    Join Date
    Dec 2007
    Posts
    8,026
    Location
    Central Ohio
    Tractor
    JD 5520, 790 TLB-- Kub L4300, B7800, MX5100, M6800

    Default Re: Engine Oil in transmissions ??

    I've got an older JD mower with a transaxle that takes 10W30. Works great.
    ****

    May I be the kind of person my dogs think I am,

  7. #7
    Super Star Member
    Join Date
    Feb 2008
    Posts
    11,506
    Location
    somewhere usa
    Tractor
    Deere 110tlb, 4520, x749, L130

    Default Re: Engine Oil in transmissions ??

    A friend of mine had a 5050 years ago which I use to operate on occasion. One of the things I liked the most was the 12 sp transmission which had several gears below 2 mph, this would make a good tractor for operating a rototiller. The hydraulic fluid capacity was limited but don't remember the exact amount. Hope the tractor works out for you.

  8. #8
    New Member
    Join Date
    Mar 2014
    Posts
    1
    Location
    Cleveland tn
    Tractor
    Allis Chalmers 5050

    Default Re: Engine Oil in transmissions ??

    I too would like the answer to this.
    Quote Originally Posted by CurtisJ71 View Post
    I just purchased an Allis Fiat 5050. Before starting to use it, I wanted to replace all the fluids, it's been sitting idle for months. I got the operators manual today, and under engine oil it says Multi-viscosity "Allis-Chalmers Power Lube 15-40. I'm using Rotella 15-40, and have been for years, so no problem there. But what is really confusing me, is that under Transmission & Hydraulic Oil, it also says to use "Allis-Chalmers Power Lube 15-40. Have I been around automatic transmissions to long ? Does it seem right to use engine oil in the transmission and hydraulics systems ???

  9. #9
    Gold Member KubotaToy's Avatar
    Join Date
    Nov 2011
    Posts
    389
    Location
    SE Tennessee
    Tractor
    Kubota B2710HSD (hers) and L45 (mine), RTV1100 (hers), Bobcat T770 CTL and E50 Ex (mine)

    Default Re: Engine Oil in transmissions ??

    I had a JD that spec'ed 10w30 in the motor and hydraulics. I am no expect but 15w40 would seem a little heavy for most conditions as hydraulic oil.

  10. #10
    Super Member
    Join Date
    Apr 2004
    Posts
    5,508
    Location
    East Coast of Lake Huron
    Tractor
    Deere, several

    Default Re: Engine Oil in transmissions ??

    Using motor in transmissions with copper, brass and bronze avoids the sulphur corrosion that GL-5 can cause.

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