Cruisers Forum

Join CruisersForum Today

Thread Tools Rate Thread Display Modes
Old 10-06-2014, 12:17   #1
Registered User
KrazySailing's Avatar

Join Date: Apr 2010
Location: Nova Scotia
Boat: CMPF Trisbal 36
Posts: 85
Oil in aluminum water tank

The boat has two water tanks one aluminum and the other polyethylene.

Had diesel fuel in the aluminum water tank of a 45 year old aluminum hull sailboat The tank is built in; the bottom is epoxied and attached to the hull. The sides and top are not attached to the hull . The tanks appear to have been lined with something (epoxy??)

Took about 2 gallons of oil off by dipping and the remainder by pouring the water oil mixture into a 5 gallon water carboy, filled it to the top and decanting the oil from the narrow opening.

Then several cycles of pressure washing and scrubbing with stainless steel brushes. Still a little oily smell and debris.

We'll next try a degreaser.

Suggestions on cleaning the tank? We'll likely use the polyethylene tank for drinking water and put filters on the aluminum tank.

There are seven 8 inch inspection ports with rubber/neoprene gaskets that now have an oily smell. Any idea on how to get the oil from the gaskets?
Listen to that little inner voice. Now!
My simple rule for sailing and maintenance: "Thought of it - do it now, else it's only gonna get worse".
KrazySailing is offline   Reply With Quote
Old 10-06-2014, 12:25   #2
a64pilot's Avatar

Cruisers Forum Supporter

Join Date: Oct 2013
Location: Albany Ga.
Boat: Island Packet 38
Posts: 11,594
Re: Oil in aluminum water tank

If it feasible I think steam cleaning will emulsify the oil and it will be removed that way, but I'd try simple green first.
Replace the gaskets, I think the fuel is inside of the rubber and you'll never get it out.
Maybe plastic tank to galley sink for drinking only and metal tank for washing etc, no consumption?
a64pilot is offline   Reply With Quote
Old 10-06-2014, 13:15   #3

Join Date: Feb 2013
Location: Boat is on the Rio Dulce
Boat: Seafarer36c
Posts: 3,584
Re: Oil in aluminum water tank

I think you may need to use alkali or caustic soda cleaner and ditch all the gaskets. The coating on the inside is a little scary. It may have soaked up fuel and you will never get rid of the taste unless the cleaner can clean down far enough into the coating. You can get dense (and $$$,) carbon filter elements that might remove some of it.
Guy is offline   Reply With Quote

oil, water

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Aluminum Water Tank Corrosion ? St. Elsewhere Plumbing Systems and Fixtures 26 16-09-2015 22:30
Can I Coat a Leaking Aluminum Water Tank with Epoxy ? nknowland Plumbing Systems and Fixtures 8 22-05-2012 15:04
Pitting in Aluminum Water Tank - Major or Minor Concern ? Konsensus Monohull Sailboats 18 19-10-2011 15:41

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002-2015 Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 23:23.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.