Why does the manual say you can use J20C in a 1025R?
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    John Deere 1025R TLB's Avatar
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    Why does the manual say you can use J20C in a 1025R?

    I cannot imagine that the temps for me actually get low enough for me to have to use J20D. Seems to me that the J20C would work better especially with the hydraulics on the BH. Ridiculous how fast it leaks down. Since the manual says you can use it, can you use it, or is this just another one of their wonderful "typos"? They need someone that knows how to write manuals down there. Ugh!

    Before I buy the technical maintenance manual, are they written as badly?
    MY2013 1025R TLB
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    glc
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    Manual states you can use the J20C,so there shouldn't be any issues if you switch. Pretty sure they use the low vis from the factory to cover all the bases so to speak.
    FredHickory likes this.
    Greg from western pa



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    arlen's Avatar
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    Quote Originally Posted by John Deere 1025R TLB View Post
    I cannot imagine that the temps for me actually get low enough for me to have to use J20D. Seems to me that the J20C would work better especially with the hydraulics on the BH. Ridiculous how fast it leaks down. Since the manual says you can use it, can you use it, or is this just another one of their wonderful "typos"? They need someone that knows how to write manuals down there. Ugh!

    Before I buy the technical maintenance manual, are they written as badly?
    The manual says you can use J20C if the ambient temperature is above 0 deg F. The chart in the manual is pretty clear (I think). J20D is factory fill and is a better fit for most of North America. If you don't operate your tractor in temperatures outside the range for J20C, then I would probably use the higher viscosity oil.
    I think the tech manuals are written in a similar style to the operator manuals, but it's still the best source of repair information that you can get.
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    I used the J20C when I did the 50 hour service. The steering is easier and the ground speed seems a little faster.
    buckb likes this.
    1025r TLB w 60D MMM & Independent Lift
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    John Deere 1025R TLB's Avatar
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    PSRumors,

    That is exactly what I am saying. I think the light weight oil is to light weight. The worst weather we had, the tractor only registered down to 18F (was -20 outdoors). The viscosity on start up is the issue, then if at below 0 F would be the real issue, once it is running, even if outside, would not get down to 0F. I went with the J20D, but I am sorry I did. Next change will be to J20C. Even if I have to put a heater on the transmission pan in the coldest weather. (how often does it get that cold anyway) I think things would work much better with the higher viscosity fluid. Less leakage past the seals in the cylinders. What kills me is they use the low viscosity because of temps, but do not put the block heater in. Makes a lot of sense.

    Bill
    MY2013 1025R TLB
    47" 2 stage front QT Snow Blower
    647 Tiller
    54D QT mowing deck W/ independent lift
    120H FEL W/ 49 in bucket
    260 BH W/ 12" bucket
    Homemade 10 Kw PTO Driven Generator (Timing Belt Driven 2000RPM input, from front PTO)
    1972 Homelite XL12 inherited from Dad going strong!
    Stihl FS90 String Trimmer
    Mantis Rotary Tiller
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    HydroHarold's Avatar
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    Quote Originally Posted by arlen View Post
    I think the tech manuals are written in a similar style to the operator manuals, but it's still the best source of repair information that you can get.
    I like to think of my JD manuals as "Equipment Bibles". Like The Holy Bible they contain some odd "parables" for which you must seek your own enlightenment here with "The Wise Ones"...
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    I have the backhoe and loader on mine and I'm at the 50 hour mark. Can I switch to 20C with 20D in the attachments?
    1025R w/rear light kit, 49" H120 FEL, 12" 260 BH, 60D MMM, 2048 Rotary Cutter, BB5048L Box Blade, 50# wheel weights, 4x42#suitcase weights, 5' TSC Landscape rack, TSC modified Carry-All, 42" Titan Pallet Forks, Heavy Hitch Toothbar

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    Quote Originally Posted by FredHickory View Post
    I have the backhoe and loader on mine and I'm at the 50 hour mark. Can I switch to 20C with 20D in the attachments?
    I did. There shouldn't be enough fluid in the attachments to worry with.
    FredHickory likes this.
    1025r TLB w 60D MMM & Independent Lift
    SN 114287 Built April '13 received 8/21/13
    180 degree thermostat
    Omni Transformer w/ integrated weight bracket
    Single Point
    Ken's Bolt on hooks
    Artillian Forks (42")
    Full Compliment of Wheel Weights (340lbs)
    Custom Seat Springs

    Kubota 326H 72" deck ZTR

    Stihl MS361, FS250R

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    Ultrapile's Avatar
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    Like Psrumors, I switched also. I live too far south. The J20C is what is mostly stocked here. My little 1025 is happier for it.
    FredHickory likes this.
    Kenny
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    jimed1's Avatar
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    Quote Originally Posted by FredHickory View Post
    I have the backhoe and loader on mine and I'm at the 50 hour mark. Can I switch to 20C with 20D in the attachments?
    I have the same setup and I switched. I was thinking about switching back because it bugs me that the tranny dipstick is stamped "Low Vis Only" even though the manual states otherwise. But then the manual also states use only low vis also. It's ridiculous really. I don't know who writes that stuff, but it doesn't get much proof reading.
    2012 1026R Factory TLB
    H120 Loader, 260 Backhoe, 60D MMM with Auto PTO and Hydraulic Lift, iMatch QH, Artillian Forks, Frontier BB5060L Box Blade, Piranha Toothbar, ANBO GR-M 60" Grapple, Ken's Bolt on Hooks

    2005 John Deere GX345
    20 HP, Liquid Cooled, Power Steering, Hydraulics, 54C Deck
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