Lower Unit Gasket???

[jrichardson88]

Hello, Everyone I will soon be cranking up my 1979 175 Black Max, That thanks to some of you I kept in great shape last season. When I changed the Lower Unit Lube I noticed that the Oil was Milky somewhat. I read in a earlier post something about a gasket and vent? what is this? and what should I do. Do I need to Change more often than Once a year.

 

[Fouled Plug]

Re: Lower Unit Gasket???

The gaskets on the vent and fill screws are often overlooked. Replace them at each gear oil change. You may want to install new gaskets and run your rig for a while, and check the lube again. If water is still present, at least you have eliminated the vent and fill gaskets from the possibilities. Once a year is plenty for most users, just use a good quality marine lube.