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What's the right gear oil?

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  • What's the right gear oil?

    ... for T-86 3-spd. O/D trans.?

    I remember it being touched on before, but don't remember the answer(s)...

    Robert K. Andrews Owner- IoMT (Island of Misfit Toys!)
    Parish, central NY 13131
    http://www.cardomain.com/ride/2358680/1


  • #2
    90 wt. mineral oil.

    Las Vegas, NV
    '51 Champion Business Coupe G899965 10G-Q4-1434

    Comment


    • #3
      The Borg Warner overdrive manual also says 40 weight (non-detergent) motor oil can be used. A gallon of it is about $10 less than a gallon of 90w mineral oil at Tractor Supply Co.

      [img=left]http://rocketdillo.com/studebaker/misc/images/Avacar-hcsdc.gif[/img=left]DilloCrafter

      1955 1/2 Ton Pickup
      The Red-Headed Amazon
      Deep in the heart of Texas

      Paul Simpson
      "DilloCrafter"

      1955 1/2 Ton Pickup
      The Red-Headed Amazon
      Deep in the heart of Texas

      Comment


      • #4
        So not regular gear oil then; why not?

        Probably will go with motor oil then, since I've never owned mineral oil- and wouldn't know where to get it..

        Robert K. Andrews Owner- IoMT (Island of Misfit Toys!)
        Parish, central NY 13131
        http://www.cardomain.com/ride/2358680/1

        Comment


        • #5
          AKA GL-1 also available at Fleet Farm, Tractor Supply, etc. maybe even a good FLAPS.

          I'm told that the OD like an automatic transmission needs "just right" friction characteristics so you need to stick with something close to the oil it was originally designed for.

          nate

          --
          55 Commander Starlight
          http://members.cox.net/njnagel
          --
          55 Commander Starlight
          http://members.cox.net/njnagel

          Comment


          • #6
            http://www.studegarage.com
            Gary Ash
            Dartmouth, Mass.

            '32 Indy car replica (in progress)
            ’41 Commander Land Cruiser
            '48 M5
            '65 Wagonaire Commander
            '63 Wagonaire Standard
            web site at http://www.studegarage.com

            Comment


            • #7
              quote:Originally posted by garyash
              Thanks for that info Gary! I have been wondering about how a 90wt mineral oil can be equivalent to a 40wt motor oil.

              [img=left]http://rocketdillo.com/studebaker/misc/images/Avacar-hcsdc.gif[/img=left]DilloCrafter

              1955 1/2 Ton Pickup
              The Red-Headed Amazon
              Deep in the heart of Texas

              Paul Simpson
              "DilloCrafter"

              1955 1/2 Ton Pickup
              The Red-Headed Amazon
              Deep in the heart of Texas

              Comment


              • #8
                When I was installing the OD transmission on my Lark, I was advised by a well respected Stude guy to use half and half 30 wt non detergent oil and STP engine treatment. It's mean stuff to work with, but he swore by it. I've certainly had no problems with it in two years and about 6,000 miles.

                [img=left]http://www.alink.com/personal/tbredehoft/Bothcars.jpg[/img=left]
                Tom Bredehoft
                '53 Commander Coupe
                '60 Lark VI
                '05 Legacy Ltd Wagon
                All three Indiana built OD cars

                Comment


                • #9
                  Thanks, all; an't believe I forgot to put this in the OP, but:

                  How much does it hold?

                  I've always filled to the level of the fill hole; how much would that be for a T-86?

                  Robert K. Andrews Owner- IoMT (Island of Misfit Toys!)
                  Parish, central NY 13131
                  http://www.cardomain.com/ride/2358680/1

                  Comment


                  • #10
                    Gary/ All-
                    Are the two sections of the trans seperated? we have plugs on the fwd and aft sections.
                    I'm glad I read this thread! --Still finalizing the T-86 setup in my 2R11.
                    dan0

                    Herd:
                    06 Jetta TDI
                    1941 M15
                    1953 2R11
                    2001 F-350
                    1989 Caprice
                    Deere's:
                    67' 112H
                    88' 332

                    Comment


                    • #11
                      quote:Originally posted by bams50

                      Thanks, all; an't believe I forgot to put this in the OP, but:

                      How much does it hold?

                      I've always filled to the level of the fill hole; how much would that be for a T-86?

                      Robert K. Andrews Owner- IoMT (Island of Misfit Toys!)
                      Parish, central NY 13131
                      http://www.cardomain.com/ride/2358680/1

                      According to the book the Standard w/OD 1959 V-8 (59V) holds 4.06 pints. The Six Standard w/OD (59S) holds 3.15 pints.

                      Randy_G
                      1959 Lark Sedan
                      www.AutomotiveHistoryOnline.com

                      Comment


                      • #12
                        Yes, Dan0, you need to fill both sections until the oil begins to drip out the hole. I use a little pump oil can to fill the transmission - it isn't quick, but it's one way to make oil flow up hill.

                        [img=left]http://www.studegarage.com/images/gary_ash_m5_sm.jpg[/img=left] Gary Ash
                        Dartmouth, Mass.
                        '48 M5
                        '65 Wagonaire Commander
                        '63 Wagonaire Standard
                        web site at http://www.studegarage.com
                        Gary Ash
                        Dartmouth, Mass.

                        '32 Indy car replica (in progress)
                        ’41 Commander Land Cruiser
                        '48 M5
                        '65 Wagonaire Commander
                        '63 Wagonaire Standard
                        web site at http://www.studegarage.com

                        Comment


                        • #13
                          Gary-
                          Locating Penzoil here in Wichita is a challenge; Jiffy-Lube however has it.
                          Will 2qts do it? Can I service the aft section through the gov hole opening?
                          dan0

                          Herd:
                          06 Jetta TDI
                          1941 M15
                          1953 2R11
                          2001 F-350
                          1989 Caprice
                          Deere's:
                          67' 112H
                          88' 332

                          Comment


                          • #14
                            2 qts is plenty. I don't know if the governor hole goes to the right place. Those big pipe plugs are square and tapered, tough to get a good grip on. I got some 8-point sockets to deal with them, but a big adjustable wrench works.

                            [img=left]http://www.studegarage.com/images/gary_ash_m5_sm.jpg[/img=left] Gary Ash
                            Dartmouth, Mass.
                            '48 M5
                            '65 Wagonaire Commander
                            '63 Wagonaire Standard
                            web site at http://www.studegarage.com
                            Gary Ash
                            Dartmouth, Mass.

                            '32 Indy car replica (in progress)
                            ’41 Commander Land Cruiser
                            '48 M5
                            '65 Wagonaire Commander
                            '63 Wagonaire Standard
                            web site at http://www.studegarage.com

                            Comment


                            • #15
                              Nearly 2 qts synchromesh installed.
                              FWIW: the rear and the front fill the same - we can service the rear and it drains to the front; and vice-versa.

                              Do I NEED the L/O switch? I see the case of the switch leaks. Gear grease is a PITA on the floor...
                              dan0

                              Herd:
                              06 Jetta TDI
                              1941 M15
                              1953 2R11
                              2001 F-350
                              1989 Caprice
                              Deere's:
                              67' 112H
                              88' 332

                              Comment

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