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  1. #1
    Merendon Junkie
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    Switching from grease to oil on a Raidon due to stiction

    I recently upgraded my rockhopper suntour xcr fork to a raidon with air spring. The fork impressed me from the start and was really smooth with great small bump sensitivity. Some couple of months later I started getting some stiction on the fork which killed small bump sentivity. I tried using finsh line dry on the seals and stanchions and I also tried some silicone spray but these measures only seemed to work for a short time, and by the middle of the ride stiction was back. I decided to open it up to see what was up and re oil the foam rings but to my surprise there were no foam ring and no oil. The whole thing was splattered in some type of grease. I decided to clean the grease out and use 15wt oil like the rockshox forks use. I put in some oil soaked foam rings as it had the space where the rings go and added 10 ml of oil to each leg and put it back together.

    The fork now works incredibly smooth, even better than when it was new. I took it for a ride today and it felt great. There appear to be no leaks. So my question to you guys is: Will this fork be ok with oil instead of grease or will I kill it prematurely? If there will be no problem, then why does suntour use grease instead of oil?

    Thanks four your help!

    Cheers,
    Abel

  2. #2
    mtbr member
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    Quote Originally Posted by abelfonseca View Post
    I recently upgraded my rockhopper suntour xcr fork to a raidon with air spring. The fork impressed me from the start and was really smooth with great small bump sensitivity. Some couple of months later I started getting some stiction on the fork which killed small bump sentivity. I tried using finsh line dry on the seals and stanchions and I also tried some silicone spray but these measures only seemed to work for a short time, and by the middle of the ride stiction was back. I decided to open it up to see what was up and re oil the foam rings but to my surprise there were no foam ring and no oil. The whole thing was splattered in some type of grease. I decided to clean the grease out and use 15wt oil like the rockshox forks use. I put in some oil soaked foam rings as it had the space where the rings go and added 10 ml of oil to each leg and put it back together.

    The fork now works incredibly smooth, even better than when it was new. I took it for a ride today and it felt great. There appear to be no leaks. So my question to you guys is: Will this fork be ok with oil instead of grease or will I kill it prematurely? If there will be no problem, then why does suntour use grease instead of oil?

    Thanks four your help!

    Cheers,
    Abel
    The lower semibath oil lubes the seals. Are you referring to greasing the dust wipers? I might use synthetic grease on the wipers for assembly only. Was 10ml the spec for the lowers as I have always used 15-16ml?

  3. #3
    Merendon Junkie
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    Quote Originally Posted by keen View Post
    The lower semibath oil lubes the seals. Are you referring to greasing the dust wipers? I might use synthetic grease on the wipers for assembly only. Was 10ml the spec for the lowers as I have always used 15-16ml?
    Thanks for your reply keen. There was no oil in the lowers, only splattered grease, so I went ahead and cleaned out the grease and replaced it with 15wt oil. Im now intrigued if this switch from grease to oil can cause some damage long term and why was it using grease instead of oil in the first place.

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