Author Topic: Grey Oil  (Read 431 times)


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Grey Oil
« on: May 06, 2019, 08:38:53 AM »
Hey guys just figured I would give an update and a PSA!

I checked my oil the other day and noticed that not only was my oil grey but my engine had more oil in it.. and sadly it doesn't mean that the engine makes oil.

Recently I had the bearings in the raw water pump fail. This would have been a relatively non-issue if the bearings didn't happen to be just slightly larger than the drain holes on the pump and therefore plugging them. This lead to filling the crank case with salt water and therefore the engine makes 'mo oil.
Noticed some water and discovered the holes were clogged, so inspected and replaced the pump and a couple oil changes later and we are looking good, no additional 'mo oil.

So check those drain holes folks!
S/V Nereid, Hull #193


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Re: Grey Oil
« Reply #1 on: May 12, 2019, 06:24:29 PM »
Great advice!  Have never liked close-coupled water pumps.  They are a needless hazard for the engine.