Go Back   Cruiser Log World Cruising & Sailing Forums > Cruising Forums > General Cruising Forum
Cruiser Wiki Click Here to Login

Join Cruiser Log Today

Thread Tools Search this Thread Display Modes
Old 09-20-2006, 06:43 AM   #1
Posts: n/a
Default Fibreglass Diesel Tank

Hello, our boat is was built in the mid 80's and has a fibreglass fuel tank, we moved onto it about 12months ago. Recently whilst changing the primary fuel filter I noticed a thick gel like substance in the filter. I am wondering if the diesel is breaking down the fibreglass fuel tank, is there anyone else with fibreglass tanks?


  Reply With Quote
Old 09-20-2006, 07:01 PM   #2
Rear Admiral
Swagman's Avatar
Join Date: Sep 2005
Posts: 349

Not now but had them before. IMHO diesel fuel should not break down properly structured GRP.

I'd suggest it is more likely to be bio mould.



Boring blog at https://www.yotblog.com/swagman
Swagman is offline   Reply With Quote
Old 09-20-2006, 08:03 PM   #3
Join Date: Aug 2004
Posts: 101
Send a message via MSN to dnelson

I would agree with Swagman on that - is the gel a thick brownish to clear goo? Was the boat sitting for a while with a partially filled tank? Both a great way to grow tank sludge...
dnelson is offline   Reply With Quote
Old 09-21-2006, 01:54 PM   #4
Join Date: Mar 2006
Posts: 16
Send a message via MSN to SV Gwendolyn Send a message via Yahoo to SV Gwendolyn

I agree. I have an Endurance 37, built 1984, with 2 x 220 litre fibreglass tanks and have had no problem with them at all. I do however, make a point of occasionally draining and cleaning the tanks. Sounds like bio sludge to me.


SV Gwendolyn is offline   Reply With Quote
Old 10-30-2006, 04:23 PM   #5
Join Date: Aug 2004
Posts: 104

Hello Paul,

It won't be the glass breaking down now. It it was a badly made fuel tank it would have showed up years ago. I have to go with the others and say it sounds like you got a dose of the bio mould. sorry mate! Me thinks you got to drain the fuel system and replace the filters and flush the lines out. Give it a double dose of the ANTIDOTE to be sure it's well treated.



Bedouin is offline   Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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
Soda Blasting Fibreglass Hull Viling III Repairs & Maintenance 1 07-12-2011 12:03 PM
Tank And Diesel Cleaning steelfan Engines | Propulsion | Generators 12 05-25-2011 07:35 AM
Fuel Tank Near Engine GrahamMilne General Cruising Forum 3 08-18-2010 06:17 AM
Fibreglass Hulls KevinBarr The Poop Deck 11 05-04-2009 06:44 PM
Tank Tender Trim50 General Cruising Forum 2 06-24-2007 09:35 PM

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

RV & Travel Trailer Communities

Our RV & Travel Trailer sites encompasses virtually all types of Recreational Vehicles, from brand-specific to general RV communities.

» More about our RV 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

All times are GMT. The time now is 01:58 PM.

Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.0