Crankcase Oil Fill Level

Discussion in 'Technical Help' started by MoreCowbell, Jun 13, 2025.

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  1. MoreCowbell

    MoreCowbell Member

    Apr 24, 2021
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    New Mexico
    #1 MoreCowbell, Jun 13, 2025
    2016 Bonneville T100

    To set the oil fill level, should the bike simply be leaning on its kickstand, or placed vertical? The Maintenance Handbook doesn’t say and it makes a big difference in the sight glass !!
     
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  2. joe mc donald

    joe mc donald Joe
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    Dec 26, 2014
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    #2 joe mc donald, Jun 13, 2025
    Vertical. Fill it to the level run for a few seconds then let it settle and top back up to the level.
     
  3. MoreCowbell

    MoreCowbell Member

    Apr 24, 2021
    23
    8
    New Mexico
    #3 MoreCowbell, Jun 13, 2025
    Thanks for your response Joe. And I beg your pardon:

    In the Owner's Handbook (p.69), there is not a whisper about bike position. However, in the Service Manual (Lubrication System, p9.9), it says "The motorcycle must be level and upright when checking the oil level." I just caught that and stand corrected. And btw, I made a very nice jack for lifting and stabilizing the bike at any level. :cool:
     
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  4. joe mc donald

    joe mc donald Joe
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    Dec 26, 2014
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    #4 joe mc donald, Jun 14, 2025
    @MoreCowbell No problem. The second check when you have filled and ran then let it settle is i you have fitted the new oil filter when you run it the filter fills up and level adjusts a little. The wating is so the oil can return from places like the head and cams. Glad you are getting sorted and a good lift is a great asset.
     
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  5. Baza

    Baza Elite Member

    Jul 25, 2020
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    Amazing Grace
    #5 Baza, Jun 17, 2025
    Depending on the orientation of the filter when fitted it can be pre-filled prior to fitting.
     
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