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Walleye Message Central - View Single Post - Small factory hole in mercury lower unit? What is it?
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Old 09-03-2012, 09:44 AM
hawg hawg is offline
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Join Date: Feb 2009
Location: North Central Minnesota
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lower unit gear oil shows zero signs of milkiness. This is definatly engine oil. I'm just wondering when I drained the oil this spring if a certain amount didn't get down the the lower casing and finally work itself down? Oil is perfect also????????????

Last edited by hawg; 09-03-2012 at 09:56 AM.
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