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#572198 - 02/24/19 04:41 PM Clear Oil On Floor Beneath Drain Plug  
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Dock Holiday Offline
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Dock Holiday  Offline
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Lake Geneva, WI
I just noticed that there is a pool of liquid directly beneath the drain plug on my boat. The fluid is clear, odorless, and has a viscosity that seems thinner than motor oil. Would you suspect this to be hydraulic fluid from the stern drive tilt or the trim tabs? Could it be lube from the stern drive (VP DP)? I don't think it is motor oil due to lake of color, but it is possible as some motor oils that are quite clear. Any thoughts?

Last edited by Dock Holiday; 02/24/19 05:07 PM.
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#572199 - 02/24/19 06:40 PM Re: Clear Oil On Floor Beneath Drain Plug [Re: Dock Holiday]  
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Dave R Offline
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Raymond NH
My guess would be power steering fluid.


"Mischief Managed II"
1992 Tollycraft Cockpit Motor Yacht
Twin CAT 3208TA inboards
#572200 - 02/24/19 07:26 PM Re: Clear Oil On Floor Beneath Drain Plug [Re: Dave R]  
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Dock Holiday Offline
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Lake Geneva, WI
Originally Posted by Dave R
My guess would be power steering fluid.


Doh, PS fluid didn't even cross my mind! idn Thanks! thumb

I did have a leak in the PS system last summer. Perhaps the is just fluid from the bilge that is slowly draining out?

Due to poor lighting and stuff stored all around the boat, I will probably have to wait until spring to take a close look and see if I can identify the source. But now I will know where to start looking!

Thanks Dave!


Last edited by Dock Holiday; 02/24/19 07:31 PM.
#572201 - 02/24/19 08:29 PM Re: Clear Oil On Floor Beneath Drain Plug [Re: Dock Holiday]  
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Dave R Offline
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Originally Posted by Dock Holiday

I did have a leak in the PS system last summer. Perhaps the is just fluid from the bilge that is slowly draining out?

Thanks Dave!



What fixed the leak last Summer? If the reservoir was over-filled, and you moved the stern drive sideways manually (either with the wheel or by pushing it directly, it could have over-flowed out the cap.


"Mischief Managed II"
1992 Tollycraft Cockpit Motor Yacht
Twin CAT 3208TA inboards
#572202 - 02/24/19 09:54 PM Re: Clear Oil On Floor Beneath Drain Plug [Re: Dock Holiday]  
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Silverbullet Offline
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Boise, ID
There's only a few possibilities. Power steering or tilt. Drive fluid stinks and oil will be gold or black. Is the drive down? Was it when you stored it?


James
2002 Cobalt 226 VP 8.1GIDP
2007 Chevy 2500HD Crew Cab Duramax
1988 Suburban 3/4 Ton
2000 Subaru Forester


#572224 - 03/03/19 01:03 PM Re: Clear Oil On Floor Beneath Drain Plug [Re: Dave R]  
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Dock Holiday Offline
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Dock Holiday  Offline
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Lake Geneva, WI
Originally Posted by Dave R
Originally Posted by Dock Holiday

I did have a leak in the PS system last summer. Perhaps the is just fluid from the bilge that is slowly draining out?

Thanks Dave!



What fixed the leak last Summer? If the reservoir was over-filled, and you moved the stern drive sideways manually (either with the wheel or by pushing it directly, it could have over-flowed out the cap.


The PS leak was caused by a plastic cap somewhere in the system that cracked. This took place close to mid-season last year.

#572225 - 03/03/19 03:02 PM Re: Clear Oil On Floor Beneath Drain Plug [Re: Silverbullet]  
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Dock Holiday Offline
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Originally Posted by Silverbullet
There's only a few possibilities. Power steering or tilt. Drive fluid stinks and oil will be gold or black. Is the drive down? Was it when you stored it?


The drive is still in the raised position.

#572234 - 03/08/19 01:03 PM Re: Clear Oil On Floor Beneath Drain Plug [Re: Dock Holiday]  
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Silverbullet Offline
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Silverbullet  Offline
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Boise, ID
Originally Posted by Dock Holiday
Originally Posted by Silverbullet
There's only a few possibilities. Power steering or tilt. Drive fluid stinks and oil will be gold or black. Is the drive down? Was it when you stored it?


The drive is still in the raised position.


That would seem to indicate the tilt system isn't leaking. That leaves power steering fluid as the only potential clear fluid if it doesn't smell like gear oil. Or baby oil that leaked out of a bottle?


James
2002 Cobalt 226 VP 8.1GIDP
2007 Chevy 2500HD Crew Cab Duramax
1988 Suburban 3/4 Ton
2000 Subaru Forester



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