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Recent content by chandlerad

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    What type of oil for Alpha One 5.0?

    I just bought a 1994 Chaparral deck boat with a 5.0L Mercruiser Alpha One. The owners manual recommends 30W oil but I can't find that in the Quicksilver brand. Would I be better off using a 30W auto oil or 25W-40 Quicksilver?
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