Water in lower unit oil

My motor is a 1999 Yamaha f100 hp 4 stroke, it has 450 hours on it and after installing a water pump kit and uppper and lower shaft seals, I have drained the lower unit oil 3 times and the oil is milky after just a few hours of use. I have the Yamaha manual and followed it exactly, I removed the pump and put in again, still got milky oil. I drained the oil and with the lower unit removed from motor, put a pressure tester on it at 14 psi for 24 hours and it held steady, while rotating both shafts by hand, I even sprayed snoop leak detector on it with no bubbles. Any ideas ?? What next?


smokewagon, [ very confused ]

[jb123]

good/single gaskets on the drain and overfill screws ?

Yes, I checked them and replaced them anyways.

That's funny you ask that, I have dropped the bottom one in the drain pan and had to fish it out, I love the smell of gear oil.

thanks,

smokewagon,

[boats.net]

Once the oil becomes milky it takes several oil changes to get clean again, if you see water coming when draining then you still have a seal leaking.

OK, that makes sense, I'll give it try.

Thanks,

smokewagon,