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water in outdrive oil.

4.5K views 48 replies 12 participants last post by  Mudball  
#1 ·
I dont have a problem with my outdrive but my question is, if I just open the screw at the bottom of the drive and no water/ milky substance comes out I should be all ok correct?
 
#3 ·
Tinkerer, yes the oil is changed. I was just trying to see how you can tell the drive is getting water inside. For example if you checked this once a month would you see the water come out instantly when you pulled the screw off the bottom?

If water is getting in how can you tell before anything gets damaged?
 
#4 ·
I mite be able to help your outdrive gets very hot when your runing it hard you will get some water in it from condensation it will not be alot but if you find your getting alot of water pull your drive there is a set of gaskets you will have to by the O rings are most likely where your waer is getting in . I pull my drive each year before I put in then you can lube your Ujoint I hope this helps meye only vice
 
#5 ·
Does your boat have the reservoir bottle on the inside of the transom?

If it does and you have a water leak the oil will change color and get milky.

If you have a water leak you will usually have an oil leak also.
oil leaks out and water leaks in.

Yes you can pull the bottom plug to see if their is any water in the oil - but the drive has to sit in the down possition for a few hours before you do this to let the water settle to the plug.
You will also need to add oil after doing this.
 
#7 ·
I pull the drain plug about once a month, after it has been still for a while. If you pull out the plug, let whatever runs out run out about a second or two, and stick the plug back in the hole. I don't lose enough to make refilling the resevoir neccessary.

This is the easiest way to keep track on the condition of the drive. You may get a tiny bit of water in it, and letting it out regularly is kinda important. Anything more than a tiny bit of water is telling you that the prop seal, or drive mounting seals are bad. Take it into a pro, have them inspect and pressure test it.
 
#14 ·
Tinkerer said:
If it does and you have a water leak the oil will change color and get milky.

If you have a water leak you will usually have an oil leak also.
oil leaks out and water leaks in.
If I remember right there are two propshaft seals, one to keep water out and one to keep oil in.

On my blackhawk I had a propshaft seal go bad and it was leaking oil, but it never got any water in the drive at all.

Get your drive pressure tested and vacuum tested if you suspect oil leakage or water intrusion.
 
#23 ·
Yes I bought it with the arch - I bought the boat when it was two years old.

Like I said earlier if you have the reservoir it seams to help to keep the water out.
The drive never goes into a negative pressure point when it cools off from a hard run.
When the drive heats up the excess pressure just goes into the bottle and when it cools off the oil refills the drive.
 
#25 ·
I've run my Bravo very hard at times. At our local poker runs, I really need to pour on the coal to keep up with the big guys. Some of it is about 25 miles non stop. But like most others probably do, mainly cruising and an occasional WOT. So I'd guess my OD oil temp varies significantly, which would seem to cause/create condensation. I change the OD oil every fall and have never seen any signs of water.

edit.....knock on wood :rolleyes: