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Recent content by charles4

  1. C

    Which engine oil to use

    OK I'm new here and I have been searching for the truth to which oil to use in our 2012 4.3 MC . I search and Mercrusier web site keeps coming back as error 404. Mercrusier says recommended oil,but if I do not used will it void the warranty? Does it need to be synthetic? What I've read and...
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