What fork oil to use?

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  • eran_k
    • Feb 2026

    #1

    What fork oil to use?

    Hi
    Rebuilding my GSX400 fork with progressive springs, new bushings and seals.
    Also canceled the anti dive, so which oil should i use?

    thanks
    Eran
  • hampshirehog
    Forum LongTimer
    Past Site Supporter
    • Oct 2007
    • 12675
    • Hampshire. UK

    #2
    You'll have to experiment what's best for you (your weight, style of riding, personal preferences etc) but I would suggest either 10 or 15 wt as a starting point. I doubt you'll be far out
    79 GS1000S
    79 GS1000S (another one)
    80 GSX750
    80 GS550
    80 CB650 cafe racer
    75 PC50 - the one with OHV and pedals...
    75 TS100 - being ridden (suicidally) by my father

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