hagadonecp
New member
I have a Mercury 75hp. I'm new to boats but have some common since. I had a friend do a tune up on a boat that i purchased back in June. During that tune up he replaced the Gear oil in the lower unit. The other day we went to check the levels, just out of curiosity and found a white milky substance. He said that there wasn't any water in it before. Take in consideration that the boat had sat for atleast a year before i purchased it. It runs good and doesn't have any issues going into gear. It appears that water is getting into the lower unit. Of coarse i replaced that gear oil for the time being. I looking for some suggestions on what i should replace to make sure i take care of the problem. Should i just replace the inner & outer oil seal bearing? I inlcuded a link below that shows a diagram of the lower unit. Open for suggestions
http://www.boats.net/parts/search/M... UP/GEAR HOUSING (PROPELLER SHAFT)/parts.html
http://www.boats.net/parts/search/M... UP/GEAR HOUSING (PROPELLER SHAFT)/parts.html