1985 gs1100g fork oil

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  • Sidman
    • Feb 2026

    #1

    1985 gs1100g fork oil

    Hello , I have just bought a 1985 gs1100g and cannot find fork oil weight and quantity ,could anyone please advise , thanks ,sidman
  • Tom R
    Forum Mentor
    Past Site Supporter
    • Sep 2010
    • 777
    • Chicago, IL

    #2
    Most people use 15w... don?t worry as much about quantity as much as level from the top of the fork tube while it?s fully compressed with the springs removed. I forget the spec offhand... someone probably will chime in.
    -1980 GS1100 LT
    -1975 Honda cb750K
    -1972 Honda cl175
    - Currently presiding over a 1970 T500

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    • Guest

      #3
      Stock oil from Suzuki was 10wt I think, check a repair manual to be sure. As Tom said, a lot of people up that to a 15wt for slightly stiffer ride. I remember for the 850 the quantity going by book value was 251 ml if everything is stock, not sure if the 1100g shares the same shocks. Again, look it up in your repair manual to be sure. A lot of repair manual copies can be found here: http://gsarchive.bwringer.com/

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