Milky oil

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powerfish

Recruit
Joined
May 1, 2011
Messages
3
I have a 1999 4stroke 70hp evinrude. I think its the model thats actually made by suzuki. I started noticing the oil turning white after the last few trips. The motor ran fine, but when I pulled the bost this weekend it looked like milk. I tried changing the t-stat, and running it full out, but didn't help. Any ideas?
 
H

hidef

Lieutenant
Joined
Aug 22, 2009
Messages
1,465
Re: Milky oil

Lower unit is leaking water. How bad is it leaking and from where is what needs to be determined. Most likely it is leaking around the drive shaft. You can keep draining the excess water off and topping up the lower end until you are ready to fix it. If you are going to tear it apart you might as well get a water pump kit and change out the impeller while you are at it.
 
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boobie

Supreme Mariner
Joined
Nov 5, 2009
Messages
20,826
Re: Milky oil

Are you talking about the l/u or the p/h. And what is a bost??
 
P

powerfish

Recruit
Joined
May 1, 2011
Messages
3
Re: Milky oil

Sorry for confusion. I'm talking about the engine oil, not the lower unit. I pulled the boat.
 
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beagleboy

Seaman
Joined
Apr 15, 2011
Messages
66
Re: Milky oil

You are getting water into your crankcase. Blown gasket, loose bolts ??????? Get it fixed rightaway or you will do some very expensive damage.
 
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boobie

Supreme Mariner
Joined
Nov 5, 2009
Messages
20,826
Re: Milky oil

Sounds like you have a blown head gasket. Take it someplace where you can have a cylinder leak down test done on it. But get it fixed quickly.
 
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