REFLECTOR: Auto fuel

[Dennis Martin]

Kurt,

Stories suggest that mogas takes significant time to do its damage, and
your experience supports that theory. However, maybe the additive mix in
New Mexico is a lucky brew we won't find in other regions. I've never put
mogas in my tanks, but I was thinking about using mogas for extended X
country trips that require say two or three tanks of fuel. If most of the
mogas is consumed on the trip, and then you top off with 100LL upon
returning home, your tank might end up with 20% mogas for a few days. Is it
worth the risk to save $50 or $100? Perhaps the risk would be minimal or
non-existent. Opinions?

Dennis

On Fri, Mar 16, 2012 at 10:55 AM, <nmflyer1 at aol.com> wrote:

> Thanks!
>
>  That is definitely some good information to know. I inspected my tanks
> this week. I have had Clean Mogas in there for about a year (being cycled
> through as I run things). So far, no problems. I used a scope to look
> around as well as checked for leaks and soft spots in the tanks/sump.
>
>  Not knowing what blend of fuel you may get is the scary part. As was
> mentioned, there are many different blends based on company requests,
> location, time of year, etc. I suppose the only safe way to use Mogas in
> the V would be to find the exact name of the additive that is causing the
> problem.
>
>  I am part owner in the 100LL fuel company at my Airpark. When we take
> delivery of our fuel load, we get a spec sheet that gives all the details
> of that fuel load. I would assume that that is a rule.
>
>  One thing for sure, It is not worth the problems in the V to save a few
> bucks.
>
>  Thanks again,
>
>  Kurt
>
>
> -----Original Message-----
> From: Mike Dawson <medawson250 at yahoo.com>
> To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
> Sent: Fri, Mar 16, 2012 10:37 am
> Subject: REFLECTOR: Auto fuel
>
>  To all who use Auto fuel,
> Here is Bill Mulrooney's response to my brother's inquiry of his auto fuel
> / mogas experience.
> For those who do not know, Bill and his partner built a Velocity with a
> 427 V8...N427VA....it boogies!
>
>  Hi Bill,
> "Sorry to hear your having issues also.  I live in West Bloomfield
> Michigan. I'd be happy to talk to you about your problems and what I've
> learned from my problems.  Alcohol isn't the problem, it's the fuel
> injector cleaners that they started adding 9 months ago.  It is such a
> small molecule it literally slips threw the Jeffco coating in the tanks.
>  Our tanks look perfect inside but the fittings in the sump tank and the
> foam in the stakes just took a shit on us!  I'm still pretty sick about it!
>  I'm going to make the sump tank out of aluminum and were removing the
> outer glass skins and foam and adding another coat of Jeffco to the outside
> of the inner skin followed by 8 to 10 layers of bid.  Then foam and then
> the outer layer of glass again.  The wheel wells are about 1/8 " of glass
> and they look perfect still.  Our plane has had auto fuel in it since 2004
> with no problem till August 2012.  The vapor build up between the inner and
> outer glass and then popped the glass loose around the fuel fillers on both
> sides.  That was just after Oshkosh 2011.  Then the foam started to sink in
> on the glass.  Then we stopped flying it. "
>
> Bill Mulrooney
>
>  I stopped by my non branded Commercial Fuel Network outlet yesterday and
> this is what I learned. While there is no Ethanol in their fuel they
> service several stations. IE Chevron, 76, Mobil, Shell etc. Fuel received
> from the refinery contains the additives for that company's fuel.
> Consequently the fuel they sell to me , as non branded with no Ethanol,
> contains different additives or blends of additives from each company. They
> guarantee no Ethanol but any combination of additives after that are
> anyone's guess. So Kurt et al take heed. I'll be using 100LL for now!
> Mike Dawson
>
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-- 
All the best,
Dennis
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