Don't forget it is not just alcohol that is added to help get the lead
out. MBTE and all kinds of other "tane's" . Heptanes and such and
don't forget about winter and summer formulations which can drive you
nuts and which typically don't show up in the type of testing we can
do at the pump. Stupid EPA
I also wonder about mogas at airports I have seen more than plane go
on automatic rough after topping off from the mogas pump. I assume
that is due to volume of gas sold and how long in the storage tank but
who knows.
As you already know finding a supplier of GOOD non alcohol gas takes
time in a new area so good luck.
Since you are in Arkansas (Formerly Lived there) may I make a
suggestion. Take a day trip to your closest reservoir and check out
the boat ramps on a Saturday or Sunday morning or evening. Strike up a
conversation with the guys launching or loading the $40K + Bass boats
with minimum 100HP outboards. They will likely share gasoline wisdom
with you (especially if you have some cold "Root Beer" in the evening
or the morning for that matter. They likely buy their Non-Ethanol gas
on the way to the lake and they are not about to let bad gas get into
or stay ANYWHERE in that outboard fuel system even for a few days.
This does not help with cross country trips but around your local area
it may save you a few pennies and hassles.
My plane is NOT flying but I have built welded fuel tanks and
installed """BAD GAS""" impervious fuel lines all that is left is the
carb parts. So we will see how that works out in the future.
Remember this advice is worth what you paid.
Gary
-----------------------------------------From:
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To: krnet@list.krnet.org
Cc:
Sent: Sunday August 5 2018 12:00:27PM
Subject: KRnet Digest, Vol 6, Issue 180
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Today's Topics:
1. Mogas Blues. (Jeff Scott)
2. Re: Mogas Blues. (Ken Hurley)
3. Re: Mogas Blues. (Jeff York)
4. Re: Mogas Blues. (Jeff Scott)
----------------------------------------------------------------------
Message: 1
Date: Sun, 5 Aug 2018 02:35:24 +0200
From: "Jeff Scott"
To: krnet
Subject: KR> Mogas Blues.
Message-ID:
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------------------------------
Message: 2
Date: Sat, 4 Aug 2018 20:49:38 -0500
From: Ken Hurley
To: KRnet
Subject: Re: KR> Mogas Blues.
Message-ID:
Content-Type: text/plain; charset="UTF-8"
I'm sealing my wing tanks with a product from KBS Coatings
(KBS-Coatings.com). Randy, 877-548-9323 ext 123, was very helpful. I
hope
to eliminate future problems.
Ken Hurley
On Aug 4, 2018 7:36 PM, "Jeff Scott via KRnet" wrote:
After years of running Mogas in both the O-200 in my KR, and the
O-320 in
my SuperCub, I have run into a particularly nasty bunch of Mogas
after
moving to Arkansas. In NM, I had a good source for alcohol free
premium
Mogas and burned it for years with no issues at all. But after moving
to a
new area, other than testing for alcohol, how does one verify that
the
mogas being sold is free of any detrimental chemicals?
In April I started running a new brand of premium Mogas (everything
where I
moved is new to me). Testing for Alcohol showed it to be alcohol
free.
This summer I was away from the planes for a few weeks. When I got
back to
them, the flow meter on my fueling rig had failed (plastic gear that
runs
submerged in fuel failed), there were several leaks in my fueling
rig,
including the fuel nozzle and the hoses. At the same time, both tanks
in
my supercub developed leaks and the O-rings in my primer failed. I'm
not
sure what kind of additive is in this fuel, but whatever it is
dissolves
epoxy, pipe dopes, and damages neoprene rubber. Impressive. I was in
a
real panic as I had been running this stuff in both planes.
I have spent the last 2 weeks working on the fueling rig and the
planes,
and trying to assess the damage to the planes. What I found is, the
epoxy
tanks in the SuperCub are both compromised and leaking at points
where
there were penetrations through the tanks for various plumbing parts
like
the fuel drains and fuel pickups. I will have to cut the tanks open
and
repair from the inside, which will give me a chance to better assess
the
damage. Additionally, the O-rings in my 2 year old primer failed. New
O-rings and some fuel lube fixed the primer problem.
The fueling rig in my truck (12V fuel pump, flow meter, filter assy,
and
fuel nozzle all mounted to a 110G steel tank) had to have new hoses,
the
1-1/2 and 2 inch piping had to be dismantled and put back together
with new
pipe dope. The fuel meter had to be replaced. And the fuel nozzle
needs
new O-rings.
I drained the tanks on the KR, which are also epoxy, but were sloshed
with
an alcohol resistant slosh compound 22 years ago. Upon inspection I
can
see that the fuel etched the surface of the slosh compound, but I
can't
find any peeling or flaking compound; and I have no leaks. So at
least the
KR is OK for now.
Not looking for advice, but am putting this out there for discussion.
I'd
love to hear ideas about how one verifies that the fuel is good other
than
testing for alcohol. I don't need to hear about the wonders of
vinylester
as that was an unknown at the time my KR was built, and the tanks in
the
Cub were already built when I bought the project.
For now, the KR is still flyable. But it is unlikely I'll complete
the
fuel tank and wing repairs to the SuperCub before late fall.
-Jeff Scott
Cherokee Village, AR
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------------------------------
Message: 3
Date: Sun, 5 Aug 2018 09:03:33 -0400
From: Jeff York
To: KRnet
Subject: Re: KR> Mogas Blues.
Message-ID:
Content-Type: text/plain; charset="UTF-8"
My neighbor is a recently retired chemist and engineer with Valvoline
which
is based here. Him and I have often discussed fuel additives and
effects
and such. I am going to show him your email to get his thoughts. I
too am
having or had some fuel related failures but never used mogas. I
think mine
all stem from a gascolatir filter that disintegrated and contaminated
my
fuel and using the semi clear blue fuel line that doesnt hold up over
time.
Jeff York
Lexington,KY
Georgetown Scott County Airport
On Sat, Aug 4, 2018, 9:58 PM Ken Hurley via KRnet
wrote:
> I'm sealing my wing tanks with a product from KBS Coatings
> (KBS-Coatings.com). Randy, 877-548-9323 ext 123, was very helpful.
I hope
> to eliminate future problems.
>
> Ken Hurley
>
> On Aug 4, 2018 7:36 PM, "Jeff Scott via KRnet"
> wrote:
>
> After years of running Mogas in both the O-200 in my KR, and the
O-320 in
> my SuperCub, I have run into a particularly nasty bunch of Mogas
after
> moving to Arkansas. In NM, I had a good source for alcohol free
premium
> Mogas and burned it for years with no issues at all. But after
moving to a
> new area, other than testing for alcohol, how does one verify that
the
> mogas being sold is free of any detrimental chemicals?
>
> In April I started running a new brand of premium Mogas (everything
where I
> moved is new to me). Testing for Alcohol showed it to be alcohol
free.
> This summer I was away from the planes for a few weeks. When I got
back to
> them, the flow meter on my fueling rig had failed (plastic gear
that runs
> submerged in fuel failed), there were several leaks in my fueling
rig,
> including the fuel nozzle and the hoses. At the same time, both
tanks in
> my supercub developed leaks and the O-rings in my primer failed.
I'm not
> sure what kind of additive is in this fuel, but whatever it is
dissolves
> epoxy, pipe dopes, and damages neoprene rubber. Impressive. I was
in a
> real panic as I had been running this stuff in both planes.
>
> I have spent the last 2 weeks working on the fueling rig and the
planes,
> and trying to assess the damage to the planes. What I found is, the
epoxy
> tanks in the SuperCub are both compromised and leaking at points
where
> there were penetrations through the tanks for various plumbing
parts like
> the fuel drains and fuel pickups. I will have to cut the tanks open
and
> repair from the inside, which will give me a chance to better
assess the
> damage. Additionally, the O-rings in my 2 year old primer failed.
New
> O-rings and some fuel lube fixed the primer problem.
>
> The fueling rig in my truck (12V fuel pump, flow meter, filter
assy, and
> fuel nozzle all mounted to a 110G steel tank) had to have new
hoses, the
> 1-1/2 and 2 inch piping had to be dismantled and put back together
with new
> pipe dope. The fuel meter had to be replaced. And the fuel nozzle
needs
> new O-rings.
>
> I drained the tanks on the KR, which are also epoxy, but were
sloshed with
> an alcohol resistant slosh compound 22 years ago. Upon inspection I
can
> see that the fuel etched the surface of the slosh compound, but I
can't
> find any peeling or flaking compound; and I have no leaks. So at
least the
> KR is OK for now.
>
> Not looking for advice, but am putting this out there for
discussion. I'd
> love to hear ideas about how one verifies that the fuel is good
other than
> testing for alcohol. I don't need to hear about the wonders of
vinylester
> as that was an unknown at the time my KR was built, and the tanks
in the
> Cub were already built when I bought the project.
>
> For now, the KR is still flyable. But it is unlikely I'll complete
the
> fuel tank and wing repairs to the SuperCub before late fall.
>
> -Jeff Scott
> Cherokee Village, AR
> _______________________________________________
> Search the KRnet Archives at
> https://www.mail-archive.com/krnet@list.krnet.org/.
/> > Please see LIST RULES and KRnet info at
http://www.krnet.org/info.html.
/> > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org
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> options.
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> _______________________________________________
> Search the KRnet Archives at
> https://www.mail-archive.com/krnet@list.krnet.org/.
/> > Please see LIST RULES and KRnet info at
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>
------------------------------
Message: 4
Date: Sun, 5 Aug 2018 15:13:24 +0200
From: "Jeff Scott"
To: krnet@list.krnet.org
Subject: Re: KR> Mogas Blues.
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