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  1. #1
    New Member
    Join Date
    Feb 2014
    Posts
    5
    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
    3,676
    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
    1,480
    Location
    Northeastern Minnesota
    Tractor
    JD 7720; Kubota M135GX, NH TS115A; JD 6230; Kubota L5740

    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
    1,044
    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
    5,619
    Location
    Ohio
    Tractor
    JD 5520, 790 TLB-- Kub L4300, B7800, MX5100

    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 Member
    Join Date
    Feb 2008
    Posts
    9,393
    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
    Silver Member KubotaToy's Avatar
    Join Date
    Nov 2011
    Posts
    137
    Location
    SE Tennessee
    Tractor
    Kubota B2710HSD (hers) and L45 (mine), RTV1100 (mostly hers, but I get to drive it sometimes)

    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
    Elite Member
    Join Date
    Apr 2004
    Posts
    2,660
    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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