2004 Johnson 4 Stroke Lower unit Oil

[nntravel1]

What would cause the lower unit oil to blacken? Milky I have seen from water intrusion. There are no metal shavings??

 

[Silvertip]

Re: 2004 Johnson 4 Stroke Lower unit Oil

Been in there too long??

 

[ezeke]

Re: 2004 Johnson 4 Stroke Lower unit Oil

Any gear oil that has turned black is worn out, usually from lack of routine maintenance.