Cloudy gas????

[Dave]

I was getting the snow blower ready for winter and when I went to fill
the tank noticed the gas in the can was cloudy. The gas was purchased
around the beginning of Oct and stored with a tight lid so I cant
imagine it has gone bad...or has it???? Is it ok to use?

I called the gas station but they don't seem to know anything.

[Paul Drahn]

If the gas temperature was much below 32 degrees, then the alcohol in
the gasoline has absorbed water and it has frozen out of solution in the
alcohol. Just a guess, as you mentioned snow!

Paul

[harry]

If it was avgas, it would be rejected as possibly causing carb. icing.
It has absorbed some water.
However it is a very small amount, it is probably OK to use.

There is always water in mogas.

[Anonymous]

"Dave" <nos...@gmail.com> wrote in message
news:8cydnXKg9v3Lkk7T...@giganews.com...

I had that happen too. Turns out it was water in the gas.
Don't know how it got there. I dumped it out.

[Stormin Mormon]

I sometimes have cloudy gas, especially after a trip to Taco Bell.

"Dave" <nos...@gmail.com> wrote in message
news:8cydnXKg9v3Lkk7T...@giganews.com...

[Don Phillipson]

On Nov 28, 4:34 am, Dave <nos...@gmail.com> wrote:

> I was getting the snow blower ready for winter and when I went to fill
> the tank noticed the gas in the can was cloudy. The gas was purchased
> around the beginning of Oct and stored with a tight lid so I cant
> imagine it has gone bad...or has it???? Is it ok to use?

In order to use up this old gas:
1. filter it (through felt or chamois leather);
2. use it in your car. (The car's fuel filter guarantees it will
burn OK: Most snow blowers have no fuel filter.)

--
Don Phillipson
Carlsbad Springs
(Ottawa, Canada)

[Stormin Mormon]

Yep, that proves it. I must have taken up drinking, again.
Sorry, folks, someone got to stop cloning around.

--
Christopher A. Young
Learn more about Jesus
www.lds.org
.


"Stormin Mormon" <cayoung61**spamblock##@hotmail.com> wrote
in message news:jb09n9$cht$1...@dont-email.me...

[Stormin Mormon]

looks like you don't know anything either.

"Dave" <nos...@gmail.com> wrote in message
news:8cydnXKg9v3Lkk7T...@giganews.com...

[Stormin Mormon]

no one doubts that you dumped

"Anonymous" <anon...@nymshifter.guv> wrote in message
news:javnv...@news3.newsguy.com...

[Jim Elbrecht]

I think I'd use it to kill grass, start fires, or clean brushes.

Dump it in my car? Not on *your* life.

If I was going to trust a filter [which I wouldn't] - I'd put one on
the snowblower. [I have one on mine, but still wouldn't put
questionable gas in it.]

Jim

[HeyBub]

[Frank]

Sounds like water. Probably too late to see if gas station is at
fault.
Chamois filter idea sounds good or maybe even dry paper.

[Stormin Mormon]

Spoof, the friendly ghost?

--
Christopher A. Young
Learn more about Jesus
www.lds.org
.

"HeyBub" <hey...@NOSPAMgmail.com> wrote in message
news:dqednYhskJhCIU7T...@earthlink.com...

[harry]

No amount of filtering will remove water from petrol.
Water in petrol is normal and is permitted to controlled levels,
Petrol is hygroscopic it absorbs water from the air and there is
water in it when manufactured.
It can only be removed by an adsorbent device..

[Frank]

It's not filtering but absorbing into the chamois or paper.
In the lab, I'd use anhydrous calcium sulfate or molecular sieves.
Petrol, without alcohol is not hygroscopic.

[Larry W]

In article <fac7d7ls3ej024j0p...@4ax.com>,

A gallon or so of gasoline contaminated with a small amount water (or other
normally undesireable product such as 2 stroke oil or diesel fuel) will not
harm a car if added to a nearly full (let's say 15 gallons or more) tank.
If you believe it to be water add a can of drygas if your area doesn't use
ethanol blended gasonline) This is SOP for many vehicle fleet operators
to get rid of such contaminants without having to go the hazardous disposal
route & the attendant documention requirements and costs. (Speaking from
34 years experience in vehicle fleet maintenance & management)
--
Better to be stuck up in a tree than tied to one.

Larry Wasserman - Baltimore Maryland - lwasserm(a)sdf. lonestar.org

[Larry W]

In article <66bd46a2-bf87-482e...@i6g2000vbe.googlegroups.com>,

Not entirely correct. Genuine, new chamois, first soaked in clean
gasoline can be effective enough for a snow blower, though certainly
would not be recommended for an airplane.

See for instance:
http://www.marineenginedigest.com/specialreports/water_in_the_fuel.htm
http://www.free-online-private-pilot-ground-school.com/aircraft-powerplant.html
http://en.wikipedia.org/wiki/Chamois_leather


Gasoline is not hygroscopic unless it has been blended with ethanor
or other hygroscopic compounds.

[Stormin Mormon]

I bought a snow blower, had been sitting for a while. Two
stroke Tecumseh engine. Would not run, as the metering jet
for the carb was clogged. Dissemble, and clear that. After
clearing the jet every five minutes, a couple times. I found
a fuel filter I had figured to use on a lawn mower, new in
package. With some hesitation, I gave my snow blower a
vasectomy, and put in a fuel filter. Runs a lot better, now.

--
Christopher A. Young
Learn more about Jesus
www.lds.org
.

[Dave]

Just what I feared. I'll prolly toss the gas on the brush pile.

[Dave]

On 11/28/2011 1:55 AM, harry wrote:
> On Nov 28, 4:34 am, Dave<nos...@gmail.com> wrote:
>> I was getting the snow blower ready for winter and when I went to fill
>> the tank noticed the gas in the can was cloudy. The gas was purchased
>> around the beginning of Oct and stored with a tight lid so I cant
>> imagine it has gone bad...or has it???? Is it ok to use?
>>
>> I called the gas station but they don't seem to know anything.
>
> If it was avgas, it would be rejected as possibly causing carb. icing.

Water in the gas causes carburetor icing?

[Dave]

So a cars fuel filter will remove the water?
>

[Stormin Mormon]

As I understand, a car fuel filter can block the water. And
then the water collects, at the fuel filter, until worse
things happen.

--
Christopher A. Young
Learn more about Jesus
www.lds.org
.

"Dave" <nos...@gmail.com> wrote in message

news:q7KdnQRw8dxI3UnT...@giganews.com...

[Stormin Mormon]

When I took some pilot lessons, they had a knob for "carb
heat" which we ran heat, every day, all day. Between high
altitudes, and air flow, and all. Carbs have been known to
ice over. Cuts the air flow to the engine, and leads to less
than ideal flying conditions.

--
Christopher A. Young
Learn more about Jesus
www.lds.org
.


"Dave" <nos...@gmail.com> wrote in message

news:KYSdnTdEpMhEoknT...@giganews.com...

[Oren]

On Mon, 28 Nov 2011 21:20:38 -0500, "Stormin Mormon"
<cayoung61**spamblock##@hotmail.com> wrote:

>As I understand, a car fuel filter can block the water. And
>then the water collects, at the fuel filter, until worse
>things happen.

Back in the day, fuel filters had a glass globe. You could see the
water, trash, etc. via the glass.

Simple as removing the glass to wash it out. I've seen them filled
with sugar for vandalism when sugar was poured into the fuel tank.

Pic:

<http://www.impalas.com/images/T/GF48.jpg>

[Stormin Mormon]

I've seen those glass globe, on tractors. Now, we're totally
in the disposable era. Next, we'll have disposable
computers, disposable food containers for restaurants,
disposable tissues, disposable diapers, and what next.

--
Christopher A. Young
Learn more about Jesus
www.lds.org
.

"Oren" <Or...@127.0.0.1> wrote in message
news:rlg8d7969va4kgdn6...@4ax.com...

[Oren]

On Mon, 28 Nov 2011 21:38:58 -0500, "Stormin Mormon"
<cayoung61**spamblock##@hotmail.com> wrote:

>I've seen those glass globe, on tractors. Now, we're totally
>in the disposable era. Next, we'll have disposable
>computers, disposable food containers for restaurants,
>disposable tissues, disposable diapers, and what next.

They were also on cars and trucks.

You can still get in-line filters with glass, so you can see inside.

Please stop to posting.

[The Daring Dufas]

Not exactly all the time, high humidity is usually the culprit. Lookie here:

https://en.wikipedia.org/wiki/Carburetor_icing

TDD

[The Daring Dufas]

I thought the term was "miscible". When you mix alcohol with gasoline
the mixture is miscible with water because the alcohol is miscible with
both water and gasoline. I thought "hygroscopic" referred to solid
compounds?

http://chemistry.about.com/od/dictionariesglossaries/g/defmiscible.htm

http://preview.tinyurl.com/6rfs94n

http://chemistry.about.com/od/chemistryglossary/g/Hygroscopic-Definition.htm

http://preview.tinyurl.com/7jy72cw

TDD

[harry]

> Petrol, without alcohol is not hygroscopic.- Hide quoted text -
>
> - Show quoted text -

http://www.fueldoctors.com/tech_talk/fuel_contamination/more/7/

[harry]

On Nov 28, 11:17 pm, lwass...@sdf.lNoOnSePsAtMar.org (Larry W) wrote:
> In article <66bd46a2-bf87-482e-bfec-d4a6b2ce1...@i6g2000vbe.googlegroups.com>,

>
>
>
>
>
> harry  <haroldhr...@aol.com> wrote:
> >On Nov 28, 5:06 pm, Frank <frank.logu...@dol.net> wrote:
> >> On Nov 27, 11:34 pm, Dave <nos...@gmail.com> wrote:
>
> >> > I was getting the snow blower ready for winter and when I went to fill
> >> > the tank noticed the gas in the can was cloudy. The gas was purchased
> >> > around the beginning of Oct and stored with a tight lid so I cant
> >> > imagine it has gone bad...or has it???? Is it ok to use?
>
> >> > I called the gas station but they don't seem to know anything.
>
> >> Sounds like water.  Probably too late to see if gas station is at
> >> fault.
> >> Chamois filter idea sounds good or maybe even dry paper.
>
> >No amount of filtering will remove water from petrol.
> >Water in petrol is normal and is permitted to controlled levels,
> >Petrol  is hygroscopic it absorbs water from the air and there is
> >water in it when manufactured.
> >It can only be removed by an adsorbent device..
>
> Not entirely correct. Genuine, new chamois, first soaked in clean
> gasoline can be effective enough for a snow blower, though certainly
> would not be recommended for an airplane.
>

> See for instance:http://www.marineenginedigest.com/specialreports/water_in_the_fuel.htmhttp://www.free-online-private-pilot-ground-school.com/aircraft-power...http://en.wikipedia.org/wiki/Chamois_leather

>
> Gasoline is not hygroscopic unless it has been blended with ethanor
> or other hygroscopic compounds.
>
> --
>      Better to be stuck up in a tree than tied to one.
>

>      Larry Wasserman - Baltimore Maryland - lwasserm(a)sdf. lonestar.org- Hide quoted text -

>
> - Show quoted text -

Gasoline/petrol certainly is hygroscopic. Ethanol just makes it more
hygroscopic.
Kits are availble for testing for water in Avgas which has no ethanol.
http://www.asearle.co.uk/AVGAS-fuel-testing.html

[harry]

One cause. The jets can block with ice. Depends on atmospheric
conditions.
Test papers are available to determine the level of water in avgas.
A sample of every load of avgas delivered has to be taken tested and
retained, at least in the UK.
http://www.asearle.co.uk/AVGAS-fuel-testing.html

[harry]

On Nov 29, 2:20 am, "Stormin Mormon"

Can you catch water with a fishnet? Don't be foolish.
Water dissolves in petrol up to a point and is invisible. (It can be
tested for with a special kit).
When that point is reached, or the petrol cools visible water can be
seen.
This is what causes trouble in engines.
The "cloudiness" is minute water droplets in the petrol.

[Han]

harry <harol...@aol.com> wrote in news:c83b59a8-edfc-4905-b0cf-
d1dc53...@c18g2000yqj.googlegroups.com:

> Gasoline/petrol certainly is hygroscopic. Ethanol just makes it more
> hygroscopic.

I don't believe gasoline/petrol/benzine (US/UK/NL) is hygroscopic. Most
likely, a tank that is less than full and equilibrated with ambient
temperature, humid air will exhibit condensation when tem[erature plummets,
either with altitude, or cold nights. Once condensed, water will not
easily evaporate from the gas.

Ethanol in the gas will actually help dissolve any water that gets in the
tank, although I believe the additive that used to be sold to help dissolve
condensed water in a tank was methanol, not ethanol.

--
Best regards
Han
email address is invalid

[Stormin Mormon]

Hygroscopic can refer to either solids (like calcium
chloride) or liquids (like the mineral oil used in HVAC
systems).

He did mean ethanoL not ethanoR.

--
Christopher A. Young
Learn more about Jesus
www.lds.org
.

"The Daring Dufas" <the-dari...@stinky.net> wrote in
message news:jb1o1q$cf0$1...@dont-email.me...

>
> Gasoline is not hygroscopic unless it has been blended
> with ethanor
> or other hygroscopic compounds.
>

I thought the term was "miscible". When you mix alcohol with
gasoline
the mixture is miscible with water because the alcohol is
miscible with
both water and gasoline. I thought "hygroscopic" referred to
solid
compounds?

TDD

[Frank]

On 11/28/2011 8:33 PM, Stormin Mormon wrote:
> I bought a snow blower, had been sitting for a while. Two
> stroke Tecumseh engine. Would not run, as the metering jet
> for the carb was clogged. Dissemble, and clear that. After
> clearing the jet every five minutes, a couple times. I found
> a fuel filter I had figured to use on a lawn mower, new in
> package. With some hesitation, I gave my snow blower a
> vasectomy, and put in a fuel filter. Runs a lot better, now.
>

I've got a 4 stroke Tecumseh which says to either store with stabilized
gas or run dry. The one year I left stabilized gas in it, it would not
run and carburetor seals had to be replaced. Further reading of manual
says not to use gas with ethanol in it. The ethanol increases the
polarity of the gas which may attack seals not made for it. This is the
kind of unintended consequences you get when you let politicians make
technical decisions on what must be put in your gas.

[Stormin Mormon]

I've seen see-through filters, actually have one on my snow
blower. It's plastic, though.

Might just continue to post.

--
Christopher A. Young
Learn more about Jesus
www.lds.org
.


"Oren" <Or...@127.0.0.1>
wrote in message

news:80i8d75ik3bd9pghp...@4ax.com...

>I've seen those glass globe, on tractors. Now, we're
>totally

[Stormin Mormon]

I've heard that ethanol attacks seals.

Did we "let the politicians"? I thought they decided on
their own. We might be able to rein in the pols, but who can
tell. I suspect the pols have taken on a life of thier own.

--
Christopher A. Young
Learn more about Jesus
www.lds.org
.

"Frank" <frankperi...@comcast.net>
wrote in message news:jb2nat$dv2$1...@dont-email.me...

[Paul Drahn]

Be sure to get a fire started before tossing the gas. Ask me how I know!

Paul

[Larry W]

In article <jb2nat$dv2$1...@dont-email.me>,
Frank <frankperi...@comcast.net> wrote:
<<...snipped...>>
>
> ... The ethanol increases the

>polarity of the gas which may attack seals not made for it. This is the
>kind of unintended consequences you get when you let politicians make
>technical decisions on what must be put in your gas.

It's not the politicians who make those decisions, but the lobbiests and
high $$ campaign contributors who tell them what to do.


--
There is always an easy solution to every human problem -- neat,
plausible, and wrong." (H L Mencken)

[Larry W]

In article <jb1o1q$cf0$1...@dont-email.me>,

The Daring Dufas <the-dari...@peckerhead.net> wrote:

>On 11/28/2011 5:17 PM, Larry W wrote:

<<...snipped...>>

>> Gasoline is not hygroscopic unless it has been blended with ethanor
>> or other hygroscopic compounds.
>>
>
>I thought the term was "miscible". When you mix alcohol with gasoline
>the mixture is miscible with water because the alcohol is miscible with
>both water and gasoline. I thought "hygroscopic" referred to solid
>compounds?
>
>http://chemistry.about.com/od/dictionariesglossaries/g/defmiscible.htm
>
>http://preview.tinyurl.com/6rfs94n
>
>http://chemistry.about.com/od/chemistryglossary/g/Hygroscopic-Definition.htm
>
>http://preview.tinyurl.com/7jy72cw
>
>TDD

You evidently are correct for the terminology that a chemist would
use, though I believe that 2 liquids being miscible does not necessarily
imply an attraction between the 2 of them the way that "hygroscopic" does
for a substance that attracts water. My background is in vehicle and mobile
equipment maintenance, where the term "hygroscopic" is commonly used to
describe the affinity that DOT 3 (glycerine based) brake fluid and
some other automotive fluids seem to have for water.

--
There is always an easy solution to every human problem -- neat,
plausible, and wrong." (H L Mencken)

[Brett Buckner]

On 11/29/2011 8:39 AM, Frank wrote:
>>
> I've got a 4 stroke Tecumseh which says to either store with stabilized
> gas or run dry. The one year I left stabilized gas in it, it would not
> run and carburetor seals had to be replaced. Further reading of manual
> says not to use gas with ethanol in it. The ethanol increases the
> polarity of the gas which may attack seals not made for it. This is the
> kind of unintended consequences you get when you let politicians make
> technical decisions on what must be put in your gas.

You are absolutely correct, ethanol gasoline is the fuel from hell for
yard and garden equipment.

Shortly after the ethanol engine damage reports started rolling in, I
switched to 100LL avgas for all my 4 strokes. My 2 strokes (chainsaw and
weed whacker) get Stihl Motomix.

It sure is nice to know I can store my gas engines for a few months and
not worry about engine damage.

[Brett Buckner]

I've heard polar bears attack them too.

[Stormin Mormon]

But ethyl gives willingly to silver and gold.

(see if we have any old electronic technicians who can
explain why that's funny, violet?)

--
Christopher A. Young
Learn more about Jesus
www.lds.org
.

"Brett Buckner" <bjbu...@GMAIL.C0M> wrote in message
news:PM-dnYAK3e1-GkjT...@giganews.com...

[The Daring Dufas]

On 11/29/2011 7:50 PM, Stormin Mormon wrote:
> But ethyl gives willingly to silver and gold.
>
> (see if we have any old electronic technicians who can
> explain why that's funny, violet?)
>

There may be too much resistance. ^_^

TDD

[The Daring Dufas]

On 11/29/2011 4:45 PM, Larry W wrote:
> In article<jb1o1q$cf0$1...@dont-email.me>,
> The Daring Dufas<the-dari...@peckerhead.net> wrote:
>
>> On 11/28/2011 5:17 PM, Larry W wrote:
> <<...snipped...>>
>>> Gasoline is not hygroscopic unless it has been blended with ethanor
>>> or other hygroscopic compounds.
>>>
>>
>> I thought the term was "miscible". When you mix alcohol with gasoline
>> the mixture is miscible with water because the alcohol is miscible with
>> both water and gasoline. I thought "hygroscopic" referred to solid
>> compounds?
>>
>> http://chemistry.about.com/od/dictionariesglossaries/g/defmiscible.htm
>>
>> http://preview.tinyurl.com/6rfs94n
>>
>> http://chemistry.about.com/od/chemistryglossary/g/Hygroscopic-Definition.htm
>>
>> http://preview.tinyurl.com/7jy72cw
>>
>> TDD
>
> You evidently are correct for the terminology that a chemist would
> use, though I believe that 2 liquids being miscible does not necessarily
> imply an attraction between the 2 of them the way that "hygroscopic" does
> for a substance that attracts water. My background is in vehicle and mobile
> equipment maintenance, where the term "hygroscopic" is commonly used to
> describe the affinity that DOT 3 (glycerine based) brake fluid and
> some other automotive fluids seem to have for water.
>

Hummm, very true in many circumstances, the terminology across fields
often morphs into different but similar meanings. I remember studying
for my broadcast engineers license that the instructor said that when
asking the phone company engineers to give you more volume on your
leased line for a program feed, you don't tell them to increase the
gain, you have to ask them to lessen the loss. ^_^

TDD

[harry]

On Nov 29, 10:18 am, Han <nob...@nospam.not> wrote:
> harry <haroldhr...@aol.com> wrote in news:c83b59a8-edfc-4905-b0cf-
> d1dc53fda...@c18g2000yqj.googlegroups.com:

If petrol was not hygroscopic, why would kits be available to test
for water?

http://www.asearle.co.uk/AVGAS-fuel-testing.html

[Han]

harry <harol...@aol.com> wrote in news:77d74da9-a74f-41cc-a2c8-
d6c231...@o13g2000vbo.googlegroups.com:

> If petrol was not hygroscopic, why would kits be available to test
> for water?

hygroscopic means attracts water. At any given temperature, ambient
humidity and pressure, there is a certain amount of water that can dissolve
in any fluid, including gasloine. If then the temperature falls, such as
when the gas is evaporating, or at high altitude, the water comes outof
solution very easily and then is bad for aviation engines. Hence the need
for determining exact water content of the gas.

> http://www.asearle.co.uk/AVGAS-fuel-testing.html

[harry]

On Nov 30, 5:37 pm, Han <nob...@nospam.not> wrote:
> harry <haroldhr...@aol.com> wrote in news:77d74da9-a74f-41cc-a2c8-
> d6c23145f...@o13g2000vbo.googlegroups.com:

i know all this.
So it is hygroscopic after all?

[Frank]

I've told Harry before that I am a chemist.
He pays no attention to me.
You can't teach stupid ;)

[harry]

On Dec 1, 1:09 pm, Frank <frankperiodlogu...@comcast.net> wrote:
> On 11/30/2011 12:37 PM, Han wrote:> harry<haroldhr...@aol.com>  wrote in news:77d74da9-a74f-41cc-a2c8-
> > d6c23145f...@o13g2000vbo.googlegroups.com:
>

> >> If petrol was not  hygroscopic, why would kits be available to test
> >> for water?
>
> > hygroscopic means attracts water.  At any given temperature, ambient
> > humidity and pressure, there is a certain amount of water that can dissolve
> > in any fluid, including gasloine.  If then the temperature falls, such as
> > when the gas is evaporating, or at high altitude, the water comes outof
> > solution very easily and then is bad for aviation engines.  Hence the need
> > for determining exact water content of the gas.
>
> >>http://www.asearle.co.uk/AVGAS-fuel-testing.html
>
> I've told Harry before that I am a chemist.
> He pays no attention to me.
> You can't teach stupid ;)

You haven't explained why you need a water testing kit for Avgas.
I used to look after an Avgas fuel tank.
Extra-ordinary steps are taken to keep water out/away from it and to
make sure there's none in in it before use/delivery.
And theres no biofuels added to avgas either.
http://all-things-aviation.com/aircraft/check-for-water-contamination/

[Han]

harry <harol...@aol.com> wrote in news:e5eef018-d058-4765-88a2-
31f1b7...@f35g2000yqm.googlegroups.com:

> i know all this.
> So it is hygroscopic after all?
>

It's a question of definition. Gasoline is NOT hygrosacopic by itself,
which does NOT mean that a little water cannot dissolve in it, and
certainly doesn't mean that water condensation insode the tank cannot
occur. Sorry for the many double negatives.

Calcium chloride (solid) IS hygroscopic and will attract water until it is
dissolved in a puddle of water.

Is that sufficient illustration of the definition of hygroscopic?

[Han]

harry <harol...@aol.com> wrote in
news:9e5d111a-7e5e-47f5...@gl2g2000vbb.googlegroups.com:

Pay attention, especially to where it was said that water can condense
inside a tank, and contaminate the gasoline stored there (either in the
main storage tanks or the airplane's tank). It is likely that a little
dissolved water isn't as bad as a fine emulsion of excess condensed water
(cloudy gas). For internal combustion engines water is likely much more
of a problem than in a jet.

[Frank]

> And theres no biofuels added to avgas either.http://all-things-aviation.com/aircraft/check-for-water-contamination/- Hide quoted text -

>
> - Show quoted text -

Nobody said you could not get water in your gas. It need not be
hygroscopic for it to get there.
Finer points are lost on you.

[Han]

Frank <frank....@dol.net> wrote in news:ed8b2770-dbae-44fc-a297-
114671...@m10g2000vbc.googlegroups.com:

> Nobody said you could not get water in your gas. It need not be
> hygroscopic for it to get there.
> Finer points are lost on you.
>

Good points. :)

[k...@att.bizzzzzzzzzzzz]

On Tue, 29 Nov 2011 20:50:24 -0500, "Stormin Mormon"
<cayoung61**spamblock##@hotmail.com> wrote:

>But ethyl gives willingly to silver and gold.
>
>(see if we have any old electronic technicians who can
>explain why that's funny, violet?)

I was going to say, Violet is the nympho (but I'm an engineer, not tech).
...and I also had some tolerance for "Get Some Now".

[Jack Hammer]

Me thinks harry is either mentally retarded or a troll.

[k...@att.bizzzzzzzzzzzz]

You don't have to make a choice.

[harry]

On Dec 1, 4:46 pm, Frank <frank.logu...@dol.net> wrote:
> On Dec 1, 10:45 am, harry <haroldhr...@aol.com> wrote:
>
>
>
>
>
> > On Dec 1, 1:09 pm, Frank <frankperiodlogu...@comcast.net> wrote:
>
> > > On 11/30/2011 12:37 PM, Han wrote:> harry<haroldhr...@aol.com>  wrote in news:77d74da9-a74f-41cc-a2c8-
> > > > d6c23145f...@o13g2000vbo.googlegroups.com:
>
> > > >> If petrol was not  hygroscopic, why would kits be available to test
> > > >> for water?
>
> > > > hygroscopic means attracts water.  At any given temperature, ambient
> > > > humidity and pressure, there is a certain amount of water that can dissolve
> > > > in any fluid, including gasloine.  If then the temperature falls, such as
> > > > when the gas is evaporating, or at high altitude, the water comes outof
> > > > solution very easily and then is bad for aviation engines.  Hence the need
> > > > for determining exact water content of the gas.
>
> > > >>http://www.asearle.co.uk/AVGAS-fuel-testing.html
>
> > > I've told Harry before that I am a chemist.
> > > He pays no attention to me.
> > > You can't teach stupid ;)
>
> > You haven't explained why you need a water testing kit for Avgas.
> > I used to look after an Avgas fuel tank.
> > Extra-ordinary steps are taken to keep water out/away from it and to
> > make sure there's none in in it before use/delivery.

> > And theres no biofuels added to avgas either.http://all-things-aviation.com/aircraft/check-for-water-contamination/-Hide quoted text -

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> > - Show quoted text -
>
> Nobody said you could not get water in your gas.  It need not be
> hygroscopic for it to get there.

> Finer points are lost on you.- Hide quoted text -

>
> - Show quoted text -

No. But never the less it is.

[harry]

On Dec 1, 4:27 pm, Han <nob...@nospam.not> wrote:

> email address is invalid- Hide quoted text -

>
> - Show quoted text -

Petrol can dissolve a given amount of water at a given temperature in
exactly the same way as air (check out relative humidy).
If it then cools, the water comes out of solution in exactly the same
way as in air (fog/cloud). This is what the OP is seeing, a cloud of
water droplets,come out of solution as his petrol has cooled.
Given time, the droplets would increase in size and settle out.
(equivalent to rain in air).
At this point they become a problem.
Even if the petrol warms up, the free water is likely to remain, even
increase with every heat/coolingcycle.
If it gets into the engine it will of course not run.
In aircraft it can freeze and block off the fuel supply.
In aircraft as the petrol cools and water that was not apparent/
visible. appears and can cause problems.

It's considered good practice to leave aircraft with full tanks to
minmise all of this.

If petrol evaporates and if it is "saturated" with water, the water
also appears as a liquid and settles out, yet another potential
problem.