White lower unit oil

[tomxdana]

When I changed my lower unit oil it came out a thick white fluid. No water came out. ( I heard some people say they got some water and then fluid ) Put in a glass jar and after 2 days there is still no separation. If water changed the color of the fluid wouldn't it separate from the fluid? Could something else change color of fluid? I think I know the answer just confused that the water hasn't separated from the oil. Looking into pressure testing. Is there a tool for that or do you just rig up some fittings? I used West Marine High Viscosity. Mercury 125 hp year 2002.

 

[Barnacle_Bill]

Re: White lower unit oil

You have water intrusion. To properly test it you need to do a pressure and a vacuum test. A common place of intrusion is the seals on the drain and vent plugs. They should be changed each time you change the oil

 

[tomxdana]

Re: White lower unit oil

I change them every year. Last year I went from the mercury Premium oil to West marine high viscosity oil. They didn't stock the other so I switched figuring West marine will be around for a while and I'll jsut use their brand. Could that have something to do with the color. Don't you think after a couple of days the water would have separated from the oil? Thanks for your response.

 

[redjmp]

Re: White lower unit oil

The marine rated gear lubes have emulsifiers that bond to the water and prevent separation.

 

[robert graham]

Re: White lower unit oil

Pull your prop and check for monofilament fishing line wrapped around shaft and under bearing lip. The only other 2 places are the drive shaft and shifter shaft seals. It's gotta be fixed! Good Luck!

 

[tomxdana]

Re: White lower unit oil

The marine rated gear lubes have emulsifiers that bond to the water and prevent separation.

I like that answer time to investigate. Thanks.