Date: Sat, 12 May 2012 18:19:36 -0700
Reply-To: Scott Daniel - Turbovans <scottdaniel@TURBOVANS.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Scott Daniel - Turbovans <scottdaniel@TURBOVANS.COM>
Subject: Re: 1988 Vanagon. What is this in my gas? PIC
In-Reply-To: <CANHuMVincXvv2Op=bwLKVVTMeoraNJQRqN8X8SaHxDAW0=NOBQ@mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
It 'used to be' ...fill the tank to prevent condensation and moisture
forming in the air space.
however....
you're screwed either way if it's just going to sit.
For vans I am saving but won't run for a while ..
I treat the fuel with a fuel stabizer, then pump out every drop I can.
I figure that is better than gas going old and stale.
Someone suggested that ethanol gas deteriorates more easily too I think.
you're in a dry warm climate.
I wouldn't worry about it much ..
other than ...don't leave a lot of gas to get old sitting in the tank..
and it's bad to let any car just sit.
They are build to run after all.
I pump the stuff out and burn it in other cars. Very old gas is nasty
stuff and hard to get rid of even.
use the right hose for the application.
high pressure fuel hose may work,
but it might also lack properties that proper evap/vent hose has.
I read a whole professional auto trade magazine about not using hoses
for other than their exact application.
scott
www.turbovans.com
On 5/12/2012 5:20 PM, Oxroad wrote:
> This brings up a question I've had for a while, and depending on the expert
> answer may inform Neil's dilemma.
> Specifically the part about 1/2 a tank of gas sitting in the gas tank for a
> year or two.
>
> I've often wondered in this SoCal climate where the evenings outside
> temperatures are sometimes 20 degrees lower than the hot daytime
> temperatures for weeks at a stretch, does that create an environment where
> condensation can form daily inside the gas tank creating a water in the
> gasoline situation.
>
> Or, am I missing the science of it. Meaning am I wrong that the 1/2 tank of
> "air" in the 1/2 full tank has ambient moisture in it? Or is it the case
> that the gasoline would have to have water in it to create a water
> condensation situation IN the tank.
>
> And then finally, if there is a a weep or better a leak in the vent hoses
> on top of the gasoline tank, would/could the outside air, which assumably
> has some water content, enter the system and then by the heat of day
> followed by the cool night condense into water on top of the inside of the
> tank, finally resulting in water mixing in the gasoline. And then this
> going on for a year or two increasing the water in the tank day by day.
>
> And now for something completely different: would fuel injection hose
> rather than the low-pressure braided hose be a better choice for Vanagon
> gas tank venting-- would the Fuel Injection hose last longer in that
> application than the low-pesssure line?
>
> Thanks,
> Jeff
> 83.5 Westy
> LA,CA
>
>
>
>
> On Thu, May 10, 2012 at 11:40 PM, neil n<musomuso@gmail.com> wrote:
>
>> Hi Dennis. Thanks.
>>
>> Was just thinking of that on the way home. Like even if this Westy had
>> sat idle for a year or 2 with a half full tank, IMO, it's a stretch to
>> imagine that enough, or any, condensation would create any amount of
>> water in tank.
>>
>> I think the lines to expansion tanks are original; braided hose, no
>> clamps. It's possible the tank was, or is, leaking at the filler tube
>> O ring seal at tank. There's tell tale drip pattern below filler tube
>> at frame. It may be safe to guess that the tank has never been
>> resealed.
>>
>> It's likely the tank will need a reseal. I know Bentley outlines the
>> pressure test procedure. I wonder if I could adapt an old filler cap
>> to my brake pressure bleeder? (air pressure bleeder, no brake fluid
>> ever in it).
>> https://lh5.googleusercontent.com/-OR70veLBm-Y/S65YmscQjyI/AAAAAAAACmg/6-oJ_lH27ZY/s720/BrakeBleeder_Pink.jpg
>>
>> I can check pressure in bleeder via valve I installed.
>>
>> Neil.
>>
>> On Thu, May 10, 2012 at 4:50 PM, Dennis Haynes<d23haynes57@hotmail.com>
>> wrote:
>>> Unless you are getting fuel from contaminated sources I would look for
>> ways
>>> water and dirt are getting into the tank. Leaks on top including the vent
>>> tubes and the gravity valves on top of the wheel well expansion tanks are
>>> common places for entry. Also, small pin holes on top of the tank can let
>>> stuff in. Pressure test the tank and vents, you'll find the leaks.
>>>
>>> Dennis
>>>
>>> -----Original Message-----
>>> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf
>> Of
>>> neil n
>>> Sent: Thursday, May 10, 2012 2:22 PM
>>> To: vanagon@GERRY.VANAGON.COM
>>> Subject: 1988 Vanagon. What is this in my gas? PIC
>>>
>>> Hi all.
>>>
>>> Doing fuel hoses. I see this in fuel drained from hoses:
>>>
>>>
>> https://lh3.googleusercontent.com/-SpltwcyHBpI/T6vptzB8XLI/AAAAAAAAFwY/-2a6S
>>> NR_g3k/s912/Gas%253B%2520Fuel%2520Addititive%253F.jpg
>>>
>>> I added fuel injector cleaner but I assume that would blend with gas.
>>>
>>> Is this water I see?
>>>
>>> Pan has Teflon or similar coating. I doubt it but maybe gas ate some of
>> it
>>> off and that's what I see?
>>>
>>> Thanks
>>>
>>> Neil.
>>>
>>> --
>>> Neil n
>>>
>>> 65 kb image Myford Ready For Assembly http://tinyurl.com/64sx4rp
>>>
>>> '88 Slate Blue Westy to be named.
>>>
>>> '81 VanaJetta 2.0 "Jaco" http://tubaneil.googlepages.com/
>>>
>>> Vanagon VAG Gas I4/VR Swap Google Group:
>>>
>>>
>> http://groups.google.com/group/vanagons-with-vw-inline-4-cylinder-gas-engine
>>> s
>>>
>>
>>
>> --
>> Neil n
>>
>> 65 kb image Myford Ready For Assembly http://tinyurl.com/64sx4rp
>>
>> '88 Slate Blue Westy to be named.
>>
>> '81 VanaJetta 2.0 "Jaco" http://tubaneil.googlepages.com/
>>
>> Vanagon VAG Gas I4/VR Swap Google Group:
>>
>>
>> http://groups.google.com/group/vanagons-with-vw-inline-4-cylinder-gas-engines
>>
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