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  1. #1

    Default 1974 mercruiser 188 engine

    With only 8 hours of use do I need to change oil and all filters?

  2. #2
    Join Date
    Jun 2006
    Location
    Spotswood, NJ, USA
    Posts
    3,815

    Default Re: 1974 mercruiser 188 engine

    Most newly run engines get changed at 20 hours

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