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Thread: Synthetic Oil

  1. 09-25-2018, 11:42 AM #1
    Sickle Hook
    Sickle Hook is offline Slabmaster II
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    Default Synthetic Oil


    I have a 2.5 hp Mercury 4 stroke that is only about 6 months old. Recently I changed the oil, replacing the conventional oil that was in it with synthetic. Since then the drain plug is seeping oil around it. It’s a slow leak, but it’s driving me crazy. The plug is tight. Will switching back to conventional oil remedy this?
    Thanks
    SK
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  2. 09-25-2018, 12:55 PM #2
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    wannabe fisherman
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    sounds like you need a new "O" ring on the plug
    smiles are contagious, spread them around
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    Likes "G", crappiemax, EWS, ford man, Redge, wicklundrh LIKED above post
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  3. 09-26-2018, 12:45 PM #3
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    Fish on Line
    Fish on Line is offline Crappie.com 3K Star General
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    Agree that you need a "O" ring -- A dry "o" ring installed new will easily damage
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  4. 09-26-2018, 01:54 PM #4
    trypman1
    trypman1 is offline Crappie.com Legend
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    O-ring or gasket
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  5. 09-26-2018, 06:06 PM #5
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    Barnacle Bill
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    Quote Originally Posted by trypman1 View Post
    O-ring or gasket
    I agree. Its not the oil.
    Fair Winds and Following Seas

    Bill H. PTC USN Ret
    Chesapeake, Va

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  6. 09-26-2018, 08:42 PM #6
    deltarat
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    Synthetic oil will seep by seals and gaskets easier than conventional oil but, it can be stopped with good seals.
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  7. 10-23-2018, 09:52 PM #7
    cva34
    cva34 is offline Trophy King II
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    teflon tape if it does not use O rings
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