Oily Residue

Hi, Iím new to outboards. I recently purchased a 90 Johnson motor.  After boating I see a black oily fluid just below cowling running down the lower unit shaft. What is causing this fluid and is it a problem or just normal. Thanks for your help.

Steve

Unburned gas and oil. It dilutes the carbon in your exhaust system and causes the stuff to make a mess.

Randy

 

 

Please submit whatever questions you have to IHRTechTalk@yahoo.com.  All questions and answers selected will be displayed on this page as they come in.  Note: though all boaters are welcome, priority may be given to I.H.R. members.  Randy can not be held responsible for any advice given.  Though his information and expertise is second to none, he has no control over what you do with your boat.  It is up to you to boat safely and act responsibly, and his advice is only to be used as a guidance for your high performance boat/motor of which you are the one responsible for the risks involved.

Thanks,
Mark C.

 

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