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Milky oil came out of my outdrive this fall after replacing my upper unit. How do I source the problem and what are the likely causes? Items I did replace are the oil plug gaskets and oil passage gasket between upper and lower unit.
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There are alot of possibilities. If you have a bad U-joint bellows, the water can come in through there. Also it is posible to get some fishing line caught behind the propeller. That can create a leak. Otherwise pretty much any seal in the unit could be the culprit. It is best to pressure test both halves individually to try to track down the leak.
Tech SupportBrunswick Corporation is the original equipment manufacturer (OEM). Sterndrive Engineering, Inc. (or SEI) is not affiliated with the Brunswick Corporation and is not authorized to sell or service Brunswick products.
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