Dynamo2 crankcase oil
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Thread: Dynamo2 crankcase oil

  1. #1
    Junior Member
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    Dynamo2 crankcase oil

    I just bought two project bikes. I’m nearing a test start and need to add crankcase oil. I have books on order to answer this but what weight, etc is recommended?

  2. #2
    Senior Member
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    Mark Hollingsworth
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    If you are talking about the Dynamo mini bikes...50cc 2-stroke.
    then it does not take oil in the crankcase, but rather in the gearbox.

    I have the original manual, it called for 30wt motor oil. But you do not want modern car oils because of the wet clutch.

    I would use a good motorcycle engine oil or transmission oil.
    The Motoul 10-30 Transmission would likely work quite well.
    https://www.motul.com/ca/en-US/products/transoil-10w-30

    https://www.motul.com/ca/en-US/produ...-expert-10w-40

    I do not believe it needs ‘extreme pressure’ like some gearboxes (vintage OSSA comes to mine)
    1978 Benelli sei, 1973 Benelli 250 SuperSport, 1968 Benelli Dynamo Trail, various OSSAs, Electric Motion Escape ‘R’ (on order)

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