Roadfrog
Chilliwack, BC Canada
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Joined: 04/27/2001
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Quote:I do know a bit about humidity, due point Etc
It's DEW point, but I'm no expert. However, this guy seems to know his stuff:
condensation myth
Regardless, from personal experience and some internet researching, I have to agree it's a myth. Some mentioned underground tanks which are colder than the tank they're going into. THAT would cause more water contamination than the ambient temps we deal with in storage. Same with aircraft preflights where the aircraft will plunge into opposing temps.
Cheers
Chris
1999 Winnebago Itasca Spirit 29N
1988 Campion Allante 195
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Gale Hawkins
Murray, KY
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Joined: 07/22/2007
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Some one is not looking at all of the factors it seems. Air has a hard time reaching metal covered by fuel.
Forget the myth I do not want to be caught with a 1/2 tank of gas and need the gen set for power in the case like a few weeks ago when we were off the grid for 50 hours. 
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Roadfrog
Chilliwack, BC Canada
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Joined: 04/27/2001
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Quote:Forget the myth I do not want to be caught with a 1/2 tank of gas and need the gen set for power in the case like a few weeks ago when we were off the grid for 50 hours.
No argument here.
Here's some more reading though:
http://www.mercedesshop.com/shopforum/archive/index.php/t-112407.html
Look, I'm not telling anyone what to do and I wasn't resorting to nastiness (not mentioning names  Just do your research and don't blindly follow the lemmings.
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rockylarson
Jersey Shore
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Joined: 12/25/2007
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We volunteer for three months at a time with the USFWS. Always set up with a full tank and 32oz of Sta-Bil(around $10 at WM).Twice this year and probably three times in 2009. Wouldn't leave home without it.
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The Weekenders
Harvey, North Dakota
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Joined: 12/10/2006
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Gale Hawkins wrote:I have moved from Sta-Bil (which works) to Sea Foam because it not only stablizes the fuel but also cleans the fuel system plus it has many other uses.
Not everyone thinks adding anything is needed but I have noticed my small gas engines start better a year later using the Sea Foam.
Sea Foam was a little hard to get at one point because for about the first 50 years they sold through automotive houses but now Wal-Mart has picked it up and it is under $6 for 16 oz. even after all the fuel price increase.
Seafoam is incredible. I use Seafoam in all my small gas engines as well as DW's Grand Am. It really works well.
Every meal is a feast, everyday is a parade and every paycheck is a fortune!
Winter is not far off, the misery begins
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2004 Ford F350 6.0PSD
2008 Keystone Montana 3585SA
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Chuck&Gail
In the Colorado Mountains
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Joined: 06/16/2004
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I store vehicles with full tanks, with Sta-bil put in. Note you need to run a bit before storing. I buy Sta-bil ahead, and add at gas station before filling tank. By the time I'm home, it is in all lines (EXCEPT generator). So remember to run that as well to get treated gas into generator carb also (if applicable).
Chuck
Wonderful Wife
Lovely German Shepherd.
1999 Mercedes ML320 TV
2003 Wanderer 187TB Toybox (3620# UVW, 4800# loaded)
Not yet camped in Hawaii, 2 Canada Provinces, & 2 Territories.
I can't be lost because I don't care where this lovely road is going
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shotputguy
Cocoa Beach,FL US
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Joined: 12/27/2004
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It's dew point.
 Don't know how to do signature
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Dakzuki
Carnation, Wa, USA
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One needs to be aware that water in modern gasoline fuel tanks is largely a thing of the past for two reasons.
First off the fuel systems are closed. They do not vent directly to the atmosphere as they once did.
Secondly we are getting alcohol in our road gasoline so that will take care of water as the engine is run.
I will not jump into the fuel stabilizer argument. I have yet to use fuel stabilizer and have had no issues to date over a winter. I am sure it probably helps in environs where fuel degrades quickly (heat). Where I live the rv mostly sits during the cool months. I make sure the chains saws and genny are ready for fall wind storms and then they don't get used till spring.
95 Chinook Premier
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Bill Hamilton
Ohio
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Joined: 11/27/2005
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Myth or not, concerning the full or less than full scenario: I have done a little bit of testing myself and a tank with less than a full level will atract water. Try it yourself and I think you will see the same result.
I have heard of people having good luck with running their equipment out of fuel for storage but my experience is that it tends to dry out the gaskets and makes for leaks and other issues when you fill it back up.
As far as fuel stabilizers go: fill up two gas cans and leave one without the stabil and one with and it doesn't take too long to see which one has bad fuel in it. That in and of itself is enough reason for me to spend a buck or to for preventative maintenance.
I think that fuel is lasting for shorter periods of time now more than ever. Maybe it is the different additives, or lack thereof that the manufacturers use in the process of making the fuel. Just my two cents.
2005 31W Fleetwod Tioga SL
1996 Jeep Cherokee Toad
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Leewhiz
Johnstown, NY
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Joined: 05/18/2004
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It is always a good practice to fill your fuel tanks, and I also fill my propane tank during the winter months. Filling the fuel tank reduces the amount of moisture space available in the tank and thus reduces the amount of rust that could develop in a fuel tank.
As far as a fuel conditioner, well that's another thing. I put stabilizer in equipment I will not use during the summer months, when the heat causes more evaporation, but I do not add it during the winter. With the cold temperatures there is not nearly as much evaporation, so I don't worry about stabilizers.
The question would be today, what are the differences with the new fuel mixtures that we put in our tanks.
Lee
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