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  1. #1
    Silver Member
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    Mar 2010
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    SW Michigan
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    B 2320

    Default udt vs sudt, do they mix?

    Did my 50 hr service yesterday. It went well, but I lost about two quarts +- of hydro fluid. They sold me udt, I assume that is what is in their. I topped it off with the udt, then wondered if they had udt or sudt in it? Does it matter? Maybe my delivery manifest would specify? I'll check, but the million dollar question is does it matter if you mix udt and sudt? I assume that it does, but replacing 3.7 gallons seems wasteful at this point, not great for our mother earth. Thanks for the help..

    Also, my resevoir for my radiator is completely dry. Can I buy any 50/50 mix and top it off? Winter is on it's way, don't wan't just water.

  2. #2
    Super Member
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    central New York
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    all makes and models

    Default Re: udt vs sudt, do they mix?

    I'd say yes and yes!

    You ccould top off with UDT although the super would be better in a cold area.

    The 50/50 mix would be fine.

  3. #3
    Super Member bp fick's Avatar
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    Beaver Creek, Northern Michigan
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    Kubota BX2360

    Default Re: udt vs sudt, do they mix?

    You want sudt in that BX, trust me. Since you are only topping off, it is a no brainer.

    Yes, they mix. But the BX, especially north of the Mason-Dixon, appreciate the sudt. It is a better product, flat out. Check the specs. Hot or cold. The end.
    BP


    "Some chickens, some gardens and a Kubota."

  4. #4
    Super Member bp fick's Avatar
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    Kubota BX2360

    Default Re: udt vs sudt, do they mix?

    Poldies4, you put udt in there. It is NOT a problem. That's only 20% of the total. Your manifest won't say.

    You won't notice any difference, in all likelihood. But when the time comes for the full replacement, go with the Sudt, even though it is bit more money.
    BP


    "Some chickens, some gardens and a Kubota."

  5. #5
    Silver Member
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    Mar 2010
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    SW Michigan
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    B 2320

    Default Re: udt vs sudt, do they mix?

    sudt next time for sure. Thanks for the replies. I'll be sure to have that cork ready next time too, it's a bit of a shock when the hst screen comes out. I was at best partially prepared. (next time I'll pull the rear wheel first) My hst screen had what appeared to be a scratch, or some line that looked like it could have been a seam? It was a little rough along that line, is this damage, or normal for this part? Thanks again!!

  6. #6
    Super Member bp fick's Avatar
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    Beaver Creek, Northern Michigan
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    Kubota BX2360

    Default Re: udt vs sudt, do they mix?

    Normal.

    I do not remove the wheel/tire. Had enough room.

    Yeah, you just can't have the cork handy enough. Also, always leave the dipstick in place when doing this method. Don't want makeup air rushing in.
    BP


    "Some chickens, some gardens and a Kubota."

  7. #7
    Silver Member
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    B 2320

    Default Re: udt vs sudt, do they mix?

    Thanks BP, enjoy your Holiday!!

  8. #8
    Super Star Member
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    First organized permanent settlement in the northwest territory
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    2003 Kubota BX1500/2004 Kubota Bx23/2005 Kubota BX1500

    Default Re: udt vs sudt, do they mix?

    Quote Originally Posted by poldies4 View Post
    Did my 50 hr service yesterday. It went well, but I lost about two quarts +- of hydro fluid. They sold me udt, I assume that is what is in their. I topped it off with the udt, then wondered if they had udt or sudt in it?
    1*Does it matter? Maybe my delivery manifest would specify? I'll check, but the million dollar question is does it matter if you mix udt and sudt? I assume that it does, but replacing 3.7 gallons seems wasteful at this point, not great for our mother earth. Thanks for the help..

    Also, my resevoir for my radiator is completely dry.
    2*Can I buy any 50/50 mix and top it off? Winter is on it's way, don't wan't just water.
    1*I would have replaced the udt with Sudt when I changed the filter.
    2*No you need an antifreeze formulated especially for diesels.
    Tractors 2003 Kubota BX1500 / 2004 Kubota Bx23 / 2005 Kubota BX1500.
    Attachments 60'' Front Blade/48'' Rear Tiller/FEL/Back Hoe /
    60'' MMM/Clamp on Forks/48'' MMM
    South of Canton Ohio L .B

  9. #9
    Super Star Member
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    First organized permanent settlement in the northwest territory
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    2003 Kubota BX1500/2004 Kubota Bx23/2005 Kubota BX1500

    Default Re: udt vs sudt, do they mix?

    Quote Originally Posted by poldies4 View Post
    sudt next time for sure. Thanks for the replies. I'll be sure to have that cork ready next time too, it's a bit of a shock when the hst screen comes out. I was at best partially prepared. (next time I'll pull the rear wheel first) My hst screen had what appeared to be a scratch, or some line that looked like it could have been a seam? It was a little rough along that line, is this damage, or normal for this part? Thanks again!!
    No need to pull the wheel.
    Tractors 2003 Kubota BX1500 / 2004 Kubota Bx23 / 2005 Kubota BX1500.
    Attachments 60'' Front Blade/48'' Rear Tiller/FEL/Back Hoe /
    60'' MMM/Clamp on Forks/48'' MMM
    South of Canton Ohio L .B

  10. #10
    Super Member crazyal's Avatar
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    Dec 2003
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    Location
    Northern Vermont

    Default Re: udt vs sudt, do they mix?

    I though I read where some people use a vaccuum in the filler tube to suck air in through the drain to keep the fluid from running out. I'm no where near the 50hr mark and the company I work for has almost every size of rubber plugs but thought I might try it to see if it stops the oil from leaking out.
    Kubota L4240,Case 580K backhoe, Case 450 Dozer

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