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    Fork Oil question

    I'm getting ready to do my fork seals on my bikes and I was wondering what is the best fork oil to use.
    I didnt do it I swear !!

    --------------------------
    http://i1210.photobucket.com/albums/...Picture003.jpg 1982 GS850G

    http://i1210.photobucket.com/albums/...n1/Picture.jpg 1980 GS1100L

    #2
    There are lots of good manufacturers out there..me personally use the Suzuki fork oil from my local dealership. And if you want a real hoot to ponder, and this is no joke, In the owners manual that i had sent to me from CA for my 77 gs 750 it says to use a 50/50 mix of 10w30 motor oil and automatic transmission fluid...NO KIDDING.. I damn near fell out when i read that!!!
    MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
    1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550

    NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.


    I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.

    Comment


      #3
      The Suzuki manuals, depending on which model/manual, and which supplement you are looking at, recommend a range of oils from the 50-50 oil-ATF mixture (as noted by chuck), to fork oil, to motor oil. Honestly, I don’t think it matters much as long as the viscosity is correct. And speaking of viscosity, getting fork oil is almost the only good way to assure you are getting the proper weight so you may as well just get the fork oil.
      Ed

      To measure is to know.

      Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182

      Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846

      Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf

      KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection

      Comment


        #4
        wonder how stiff the forks would be with some 80 wgt gear oil!! LMAO add a few large nuts between the caps and the top spring just for extra stiffness on top of that!!! LOL......no kids, dont try this at home!!!
        Last edited by chuck hahn; 12-16-2009, 06:25 PM.
        MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
        1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550

        NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.


        I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.

        Comment


          #5
          80w is similar to something in the range or 40w engine oil if I remember the chart right.
          Go with 15w fork oil Belray is fine or 20w if you want a firmer ride.
          I have a mix in mine which puts it somewhere below 20 and above 15 with a spacer and 3psi and I like the ride just fine.

          One bottle of fork oil is good for two complete changes of your forks. And what is fork oil anyway, like $8 a litre?

          Comment


            #6
            Chuck, there is a 50/50 mixture of dexron III and 20 Wt non-detergent oil in my '82...

            so you can stop laughing any time now!

            Belray is as good as any fork oil out there and easy to find.
            Last edited by rustybronco; 12-16-2009, 06:43 PM.
            De-stinking Penelope http://thegsresources.com/_forum/sho...d.php?t=179245

            http://www.thegsresources.com/_forum...35#post1625535

            Comment


              #7
              Dale..I just thought that was hillarious when i read it..Thought to myself..now thats some old school technology there!!!
              MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
              1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550

              NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.


              I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.

              Comment


                #8
                I throw in a bit of PFTE (Slick 50) in the mix...the teflon does seem to make the forks have less stiction and a smoother feel.

                Comment


                  #9
                  Belray is what the local dyno shop carries so that is what I buy. Have used other brands in the past, half dozen or another.

                  Slick50?

                  In the forks probably no harm.

                  The bushings are PTFE coated from the looks of them.

                  Comment


                    #10
                    Bel Ray 15wt works well.
                    1983 GS 1100E w/ 1230 kit, .340 lift Web Cams, Ape heavy duty valve springs, 83 1100 head with 1.5mm oversized SS intake valves, 1150 crank, Vance and Hines 1150 SuperHub, Star Racing high volume oil pump gears, 36mm carebs Dynojet stage 3 jet kit, Posplayr's SSPB, Progressive rear shocks and fork springs, Dyna 2000, Dynatek green coils and Vance & Hines 4-1 exhaust.
                    1985 GS1150ES stock with 85 Red E bodywork.

                    Comment

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