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Fork Oil type & Volume

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  • Fork Oil type & Volume

    Need to replace fork oil on my 1980 XS1100Special.

    What is the best type oil and how much does EACh fork take?

    Thanks for the help.

  • #2
    Clymers says 7.6 oz of 10W fork oil for the SG. Belray is a good brand.

    Comment


    • #3
      When I had progressive fork springs put in my XJ, it was done at the Americade rally by Progressive techs. I asked them about fork oil quantity; they replied they don't go by the factory numbers. Instead, they fill the fork tubes to the level specified. This is measured in mm or inches below the lowest part of the fork tube lip.

      According to them, this takes into account for wear, and in my case, any differences between the original spring design and the Progressive design.

      So if you don't have a way to mesure tenths of an ounce, try finding out what the level should be (I don't have a manual handy, but it is there, at least in the XJ manual) and measure using a common mechanic's rule. These are flat, and are marked in mm on one side. Needless to say I am running Progressive oil in my forks.
      Jerry Fields
      '82 XJ 'Sojourn'
      '06 Concours
      My Galleries Page.
      My Blog Page.
      "... life is just a honky-tonk show." Cherry Poppin' Daddy Strut

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      • #4
        I just rechecked my Clymers, and there is no mention of any fork oil measurement...just the amount in fluid oz. I keep a small, glass measuring cup in the shop for just such a purpose. It comes in handy when to ing the middle and final drives, also.

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        • #5
          Here is the fork spec section from my Yamaha XJ manual:



          Note the oil specification is given in volume and level.
          Jerry Fields
          '82 XJ 'Sojourn'
          '06 Concours
          My Galleries Page.
          My Blog Page.
          "... life is just a honky-tonk show." Cherry Poppin' Daddy Strut

          Comment

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