Strange "Milk" like substance in my lower unit .....

Hi All -

I just pulled my Merc 25 2 Stroke (25 EL) out from storage (along with the boat) and noticed a pool of oil underneath the lower drain screw.

Saw more oil underneath once I put her in my gargae.

Went to pull the screw and clearly ....
a) not as much came out as when I replaced oil last fall.
b) Two (2) types of liquids came out: one obviously oil (90wt gear oil) and the other almost as white as milk. The two did not mix.

If it were water - wouldn't it be well, watery (and probably not mixed) ?

I took her for one last quick trip last year on Lake Erie (freshwater) and winterized it by pumping the water out.

It was stored in a heated storage unit that presumably never went below freezing.

So the question is ---

What is this stuff? Water? (why white?) Other?

And any advice on where first to look to repair. I'm kind of handy, but am running out of time for a hopeful trip for Memorial Day (with the boat, of course).

Thanks all,

George

12ft. APEX RIB Inflatable
25 Merc 2 Stroke (25 EL) 2004

Re: Strange "Milk" like substance in my lower unit .....

Water.

In storage most of the oil water mix probably seperated most is the key word.

Re: Strange "Milk" like substance in my lower unit .....

So other than bad "O" rings - do I have a problem? (thus letting oil drip out).

How did the water get in? (is there a seal I should examine & / or replace)??

Tx-

George

Re: Strange "Milk" like substance in my lower unit .....

Change the lower unit oil and run it. Keep checking it through the season.

The 2 strokes exhaust oil and water mixed and it could just be a collection that ran down while in storage. I would just keep an eye on it and check it.

Go boating It's not time to replace a seal unless it's contaminated after the first few runs.

Re: Strange "Milk" like substance in my lower unit .....

Aye, aye skipper. Thanks for the good news. I'll keep an eye on it.

Geo