Reply
 
Thread Tools Search this Thread
 
Old 27 October 2005, 13:00   #1
Member
 
Country: UK - England
Town: Wirral / Anglesey
Boat name: Cobalt
Make: Avon 620
Length: 6m +
Engine: Mariner 150hp
Join Date: Sep 2005
Posts: 15
Full or Empty??

Could I just get some views on whether it's best to leave a fuel tank (petrol, built in, 70 litres) full over the winter or empty?? (ie petrol goes stale for next year and I can't get rid of it, or tank gets water in it from condensation - which is worst?)

Cheers,

Nick
__________________

__________________
nickl is offline   Reply With Quote
Old 27 October 2005, 13:16   #2
Member
 
Country: UK - England
Town: Solent
Boat name: Hammertime
Make: 6.3 RIB
Length: 6m +
Engine: Mercury 115 Optimax
Join Date: Oct 2005
Posts: 10
i know that with yachts its best to drain the water tank completely and fill the diesel tank up to the brim so i imagine you should treat petrol the same (i.e. leave it full). You can always siphon off half (or all) of it at the start of next season and mix it with some fresh stuff.

I suppose it depends where you are keeping it over winter - if in a nice warmish dry garage then perhaps you can get away with emptying it but if leaving it outside then fill it up!
__________________

__________________
archie720 is offline   Reply With Quote
Old 27 October 2005, 13:26   #3
Member
 
Country: UK - England
Town: Portsmouth
Boat name: Riak
Make: National Squib
Length: 5m +
Engine: 2hp Yamahahahaha
MMSI: Nope
Join Date: Feb 2004
Posts: 554
Keep using the boat every now and again. No more fuel contamination worries.









I'll get my oilies.
__________________
robin is offline   Reply With Quote
Old 27 October 2005, 18:23   #4
Member
 
Country: UK - Wales
Town: West Wales
Make: Vipermax 5.8, SR4.7
Length: 5m +
Engine: 150 Opti, F50EFi
Join Date: Sep 2005
Posts: 6,298
The condensation will only arise from moist air entering the tank (commonly through the open breather). If you seal the tank off from the ambient air you should avoid any condensation occuring. The fuel feed to the engine should be airtight, as should the filler tube, so you'll probably only have the breather to deal with.
__________________
Downhilldai is offline   Reply With Quote
Old 28 October 2005, 02:00   #5
RIBnet supporter
 
nugent's Avatar
 
Country: UK - England
Town: Bromsgrove
Boat name: Kick-Ass !
Make: PAC/Artic 22
Length: 6m +
Engine: 250hp Yamaha
Join Date: Nov 2003
Posts: 3,387
Quote:
Originally Posted by Downhilldai
The condensation will only arise from moist air entering the tank (commonly through the open breather). If you seal the tank off from the ambient air you should avoid any condensation occuring. The fuel feed to the engine should be airtight, as should the filler tube, so you'll probably only have the breather to deal with.
yes i go with this theory. i never lay mine up for the winter,, but i do and have allways placed some electric tape over the breather intake. in the winter, on my last boat..my main reason was due to the smell of fuel whenever i left her coverd up for to long, fire hazard awaiting some ones fag when uncovering the rib


betya one day i will forget to remove it and suffer from fuel starvation
__________________

MY BIGGEST WORRY IS THAT MY WIFE(WHEN I"M DEAD)WILL SELL MY TOY'S FOR WHAT I SAID I PAID FOR THEM.
nugent is offline   Reply With Quote
Old 28 October 2005, 02:55   #6
Member
 
Simon B's Avatar
 
Country: UK - England
Town: Leicester
Boat name: Vixen
Make: Ribcraft
Length: 6m +
Engine: Suzuki OB 175
MMSI: 235071839
Join Date: Jun 2004
Posts: 1,621
Most reliable winter we had was when we filled it to the brim chucked in some of that fuel stabiliser stuff and ran it up every month on the flushing muffs, hadnt thought of the breather sealing idea but it sounds sense.
__________________
New boat is here, very happy!
Simon
www.luec.org
Simon B is offline   Reply With Quote
Old 28 October 2005, 03:52   #7
Member
 
Country: UK - England
Town: Mighty Penryn
Boat name: Little Joe.
Make: Avon Searider
Length: 4m +
Engine: Honda BF50
Join Date: Aug 2005
Posts: 8,841
Difinitely brim full. I've always done it without stabiliser and the boat has always started a run perfectly the next season. The added bonus is that it's 120 less to splash out at the begining of the new season. Mine get put away serviced/winterised and full of fuel. Then it's turn the key and go in March/April. If not totally empty and dryed the moisture trapped in the tank will condensate and the evaporates in the fuel will evaporate off, tank sealed or not. Much less hassle just to fill it. Adding stabiliser is prob a good idea also.
__________________
Mollers is offline   Reply With Quote
Old 28 October 2005, 05:45   #8
Member
 
Country: UK - England
Town: Binfield
Boat name: merlinless now
Length: no boat
Join Date: Jul 2004
Posts: 447
We usually keep our 1/2 full to full and and we dont open the fillers, however we dont tape the vent pipe, but we do have a good cover. Reading the other posts i think that expalins whey we dont have problems.

Also we try to use once a month
__________________
Jimbob is offline   Reply With Quote
Old 28 October 2005, 11:14   #9
Member
 
Ribshop's Avatar
 
Country: UK - England
Town: River Hamble
Length: 6m +
Join Date: Oct 2005
Posts: 726
Fill it to the brim, this will help prevent the build up of condensation. You can also put some additive in the tank over the winter to help soak up any moisture. The additive is 8.18 and a bottle is ample for a 70lt tank.
__________________
Ribshop is offline   Reply With Quote
Old 26 November 2005, 02:44   #10
Member
 
Country: USA
Town: Oakland CA
Length: 3m +
Join Date: Feb 2005
Posts: 6,653
The condensation thing is not a single-event thing, but an accumulation of water over time and many cycles. A small amount of water on each long term storage adds up eventually. For those with steel tanks, it also becomes a corrosion issue.

I'd suggest filling it up and stabilising the fuel with a commercial additive. That way you don't have to worry about the water contamination.

Taping off or otherwise sealing the breather vent will help with water intrusion and nesting critters.

jky
__________________

__________________
jyasaki is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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





Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 12:18.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.