lower unit oil milky

[glassmaster68]

is the lower unit oil supposed to be milky,like water mixed with it?is that normal?

 

[wahoo610]

Re: lower unit oil milky

Sounds like you got water in it , time to replace seals, I'm doing the same thing. good luck!!

 

[izoomie]

Re: lower unit oil milky

No it's not, it supposed to look like clean oil. It doesn't even get black like engine oil.

I would replace the washers on the drain plugs, install new oil and take it for a spin.

If you have water in it after that you will see it right away and now you are into seals.

Not the worse job there is and there is lots of advice here.

Listen.......I hear more coming right now!

 

[robert graham]

Re: lower unit oil milky

Remove prop, check for monofilament fishing line wrapped around prop shaft cutting seal and/or causing seal to leak. Milky oil is not good, especially if it's salt water leaking in. It's good you found this before any major damage. Good Luck!

 

[glassmaster68]

Re: lower unit oil milky

if a seal,,is it mostly just the prop shaft seal?,,,do you have to remove lower unit for prop shaft seal?or just prop to get to it

 

[c_douce]

Re: lower unit oil milky

I had the same problem, make sure you remove all screws attached to the unit and replace or add new seals, I didn't get mine in time so I had to replace the lower unit.
Now I have a question, I bought a used lower unit, cleaned the entire unit, installed, reconnected all wires and the motor would not start, not turning over, nothing and it started every time last year, does anyone have the fix to this?

 

[Jugfisher]

Re: lower unit oil milky

make sure you inspect th lower unit thouroghly after you have changed the seals. If the waater has been in there to long and you have anyhting in there that has worn down or has corosion or anyhting that isnt normal you will wnat to replace it befor putting it back together. Better to do it right the first time than to get out on the water and have to be towed back form majr damage. IF not, reseal, re oil and happy boating.

 

[Jugfisher]

Re: lower unit oil milky

C douce start another thread

 

[glassmaster68]

Re: lower unit oil milky

noticed an old gasket behind the new one on the drain plug,,,,filled it with oil and put a big piece of card board under it,,its been 3 hrs and still no oil leak,,,,i guess the water can get in easier than the oil can get out,,,im gonna try it this weekend and see if the plug gasket was the culprit

 

[asdasc]

Re: lower unit oil milky

Glassmaster, I would be shocked if any fluid leaked out onto your cardboard. The leaks don't normally occur when the motor is still. Start moving parts thru their gaskets and seals, and the very, very small leaks will allow water in, and MAYBE some oil out.

Even if the issue is the drain and fill screw gaskets. When everything is operating and hot, the air inside the gearcase expands, pushing some air out the tiny openings. When things cool down at the end of the day, it creates a vaccuum inside the gearcase, and it pulls water in thru those same tiny openings. The only way to avoid it is to have seals good enough to withstand the amount of pressure and vaccuum.

 

[kenmyfam]

Re: lower unit oil milky

Glassmaster, I would be shocked if any fluid leaked out onto your cardboard. The leaks don't normally occur when the motor is still. Start moving parts thru their gaskets and seals, and the very, very small leaks will allow water in, and MAYBE some oil out.

Even if the issue is the drain and fill screw gaskets. When everything is operating and hot, the air inside the gearcase expands, pushing some air out the tiny openings. When things cool down at the end of the day, it creates a vaccuum inside the gearcase, and it pulls water in thru those same tiny openings. The only way to avoid it is to have seals good enough to withstand the amount of pressure and vaccuum.

Agree ^^^^^^^

 

[c_douce]

Re: lower unit oil milky

how do I make a new thread, I looked and looked and can't figure it out?
Edit/Delete Message

 

[glassmaster68]

Re: lower unit oil milky

when you first get in to the johnnyrude area,look in the blue box at the top ,"create new post" it says

 

[byg]

Re: lower unit oil milky

I was waiting for the answer, do you need to open the gear case to replace the seal?? Or can you just remove the prop and pop it out??

 

[jonesg]

Re: lower unit oil milky

I was waiting for the answer, do you need to open the gear case to replace the seal?? Or can you just remove the prop and pop it out??

dON'T DO IT UNLESS YOU FIND WATER INTRUSION AFTER CHANGING THE DRAIN PLUG SEALS. Check prop shaft for fishing line, thats what usually cuts the prop seal. My oil looked like milkshake but it was just the little O ring seals on the drain screw, $1 ea.

 

[c_douce]

Re: lower unit oil milky

Thanks, it only took me a few days to find the arae. LOL!