Current recommendations for GL-4 gear oil?

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  • CRiordan01
    Low Range
    • Aug 2009
    • 76
    #1

    Current recommendations for GL-4 gear oil?

    Finding straight up GL-4 gear oil that is not, in fact, GL-5 seems to be tricky these days. What GL-4 oil are you using on your rigs that you are happy with (and able to easily source)?

    Thanks.

    Corey
    ~ Corey

    1974 Series III RHD SWB
    2003 Freelander
    Tags: None
    • grasshopper
      Low Range
      • Sep 2011
      • 8
      #2
      Originally posted by CRiordan01
      Finding straight up GL-4 gear oil that is not, in fact, GL-5 seems to be tricky these days. What GL-4 oil are you using on your rigs that you are happy with (and able to easily source)?

      Thanks.

      Corey
      I have found that NAPA GL-4 80-90w is easy to get, although I had to special order it from my local store. But it only took a couple days to get.

        Comment

        • CRiordan01
          Low Range
          • Aug 2009
          • 76
          #3
          Originally posted by grasshopper
          I have found that NAPA GL-4 80-90w is easy to get, although I had to special order it from my local store. But it only took a couple days to get.

          Thanks
          ~ Corey

          1974 Series III RHD SWB
          2003 Freelander

            Comment

            • o2batsea
              Overdrive
              • Oct 2006
              • 1199
              #4
              Tractor supply stores or your local John Deere dealership. I buy 90wt in 5 gallon pails. You use a garden sprayer with the nozzle cut off as a filler. Be sure to get one that lets you lock the trigger on. They're like $15. Put a pan under the fill hole stick the end of the sprayer in the hole, lock the trigger and let it do its thing until you see the oil overflowing into your pan. Neat.

                Comment

                • siii8873
                  Overdrive
                  • Jul 2007
                  • 1011
                  #5
                  stabil gl4 at Amazon
                  THING 1 - 1973 88 SIII - SOLD
                  THING 2 -1974 88 SIII Daily Driver - SOLD
                  THING 3 - 1969 88 SIIA Bugeye Project
                  THING 4 - 1971 109 SIIA ExMod - SOLD
                  THING 5 - 1958 109 PU
                  THING 6 - 1954 86" HT

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                    • nantley79
                      Low Range
                      • Sep 2012
                      • 28
                      #6
                      What's wrong with GL5? I put a whole bunch of it in my Rover a couple months ago when I topped everything off. Shouldn't matter it already needs more!

                        Comment

                        • landerley
                          Low Range
                          • Jul 2014
                          • 9
                          #7
                          Originally posted by nantley79
                          What's wrong with GL5? I put a whole bunch of it in my Rover a couple months ago when I topped everything off. Shouldn't matter it already needs more!
                          As I understand it, GL5 has additives that will eat the yellow metal in a series gearbox. That is why you need to stick with GL4 or something that says "yellow metal safe".

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