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  1. #1
    Silver Member
    Join Date
    Oct 2010
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    127
    Location
    Charlotte, NC
    Tractor
    JD 4410, two JD 318's, 50" and 46" MMM, 48" KK BB

    Default Low vis vs. Hygard

    My 4410's manual says the recommend low vis but then they have a temperature chart that says ony use low vis to 80 degrees F. and that seemingly Hy-gard should be used for higher temps and it is suppose to be good down to 0 degrees F. My dealer (parts man) says they put low-vis in everything. I live in NC were it very rarely reaches 0 and if regulary exceed 80 degrees. Does any one know the pros and cons of the different fluids.

  2. #2
    Gold Member
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    May 2004
    Posts
    344
    Location
    Corn Country, Illinois
    Tractor
    John Deere

    Default Re: Low vis vs. Hygard

    This is the best stuff I know of...

    http://www.archeroil.com/images/Spec/transimission.pdf
    JD 2011, 2520,61 200CX loader,imatch,pallet forks,54 front blade,4 Yanmar Tillar...Life is good!!!

  3. #3
    Super Member greg_g's Avatar
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    Dec 2003
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    6,028
    Location
    Western Kentucky
    Tractor
    JD3720 Cab, 300X loader with 4-in-1 bucket

    Default Re: Low vis vs. Hygard

    HyGard is similarto (if not the same as) the old JD303; a 20W30 viscosity equivalent. Low Viscosity HyGard is a 10W20. Here in western Kentucky I'm plannin' to stick with the 10W20 stuff that was in the tractor when it was delivered.

    //greg//
    Last edited by greg_g; 04-03-2011 at 08:30 AM.
    USN (Ret)
    Former Chinese tractor owner (x4)
    Current John Deere owner

  4. #4
    Elite Member Tx Jim's Avatar
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    Jan 2007
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    4,524
    Location
    Coyote Flats,Tx
    Tractor
    JD 4255/Kubota M7040 HDC

    Default Re: Low vis vs. Hygard

    Quote Originally Posted by greg_g View Post
    HyGard is just the old JD303, it's a 20W30 viscosity equivalent. Low Viscosity HyGard is a 10W20. //greg//
    JD Hy-Gard replaced 303 but I think it has more wear additives than 303. Also the chart I looked up stated it is 5W30 not 20W30. Here's a quote from JD's website
    [: "Hy-Gard oil can be used in most applications calling for 10W-30 or 5W-30 engine oil for transmission and hydraulic oils. ]

  5. #5
    Super Member greg_g's Avatar
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    Western Kentucky
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    JD3720 Cab, 300X loader with 4-in-1 bucket

    Default Re: Low vis vs. Hygard

    I was merely repeating the response I got when I asked the same question at the John Deere parts counter. So if HyGard is 5W30 as you claim, what does that make Low-Vis; 0W20? Any chance you can provide a link to that chart?

    //greg//
    USN (Ret)
    Former Chinese tractor owner (x4)
    Current John Deere owner

  6. #6
    Veteran Member
    Join Date
    May 2008
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    1,180
    Location
    Eastern Ia
    Tractor
    JD 4310 eHydro,

    Default Re: Low vis vs. Hygard

    I live in Iowa and have a 4310. I use low vis for all my past and present tractors. I have used the 4310 from - 40 to 110. When this question was hashed over a while ago, someone said you could even mix the two for a "custom" level of protection. All the oil threads go on forever. Believe what you want on the internet.

  7. #7
    Elite Member Tx Jim's Avatar
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    Coyote Flats,Tx
    Tractor
    JD 4255/Kubota M7040 HDC

    Default Re: Low vis vs. Hygard

    Quote Originally Posted by greg_g View Post
    I was merely repeating the response I got when I asked the same question at the John Deere parts counter. So if HyGard is 5W30 as you claim, what does that make Low-Vis; 0W20? Any chance you can provide a link to that chart?

    //greg//
    Sorry as I computer illiterate at posting links. Go to JDparts.com,click on parts and scroll down on LH side of page to "lubricants"

  8. #8
    Super Member greg_g's Avatar
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    Dec 2003
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    Location
    Western Kentucky
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    JD3720 Cab, 300X loader with 4-in-1 bucket

    Default Re: Low vis vs. Hygard

    Quote Originally Posted by Tx Jim View Post
    Sorry as I computer illiterate at posting links. Go to JDparts.com,click on parts and scroll down on LH side of page to "lubricants"
    Yeah, I think you're confusing HyGard with something else. Here's the Lubricant Chart, there's no mention of HyGard viscosity at all. And if you follow the HyGard link, you'll see them describe Lo-Vis as AW32 and HyGard as somewhere between AW46 and AW64. That's more consistent with my description of Lo-Vis as a 10W20 and HyGard as a 20W30

    Note also the temp graph that show both good to +122F in the summer. But come winter. HyGard is rated to about -13F, whereas Lo-Vis is rated down to -40F

    //greg//
    USN (Ret)
    Former Chinese tractor owner (x4)
    Current John Deere owner

  9. #9
    Elite Member Tx Jim's Avatar
    Join Date
    Jan 2007
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    4,524
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    Coyote Flats,Tx
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    JD 4255/Kubota M7040 HDC

    Default Re: Low vis vs. Hygard

    Greg
    After working for a JD dealer for over 20 yrs and then running JD equip another 20+ yrs I know what Hy-Gard is just looked at wrong spec's.Must have been caused by my Oldtimers disease. You were correct as it has a 20W rating

  10. #10
    Silver Member
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    Oct 2010
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    Location
    Charlotte, NC
    Tractor
    JD 4410, two JD 318's, 50" and 46" MMM, 48" KK BB

    Default Re: Low vis vs. Hygard

    Greg.

    Where is the temp graph that shows them both to be good to 122? This is the one in the 4410 manual.
    Attached Thumbnails Attached Thumbnails -temp-chart-jpg  

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