That Fuel Testers website seems very bent to scare-mongering about E10 - but then, scare-mongering helps them sell their product.  

A more balanced approach - albeit aimed at boaters, but old boat engines and old VW engines have much in common - is here at West Marine:  http://www.westmarine.com/WestAdvisor/Busting-Ethanol-Fuel-Myths

James
Ottawa, ON
Ontario - where regular gas must contain ethanol, but premium doesn't have to.

> Date: Fri, 26 Feb 2016 12:35:07 -0800
> From: tyler@SERAPH-NET.NET
> Subject: Re: Ethanol Free Gas.. No fuel pump buzzing?
> To: vanagon@GERRY.VANAGON.COM
> 
> Meant to send to the whole list.
> 
> I do not have the square filter between the tank and pump. Nor does it
> appear that this van ever had one..? I am considering adding one.
> 
> Also found this.. http://goo.gl/i73hNm
> 
> --t
> 
> 1985 Westy Weekender 1.9l Original Engine.
> 
> On Fri, Feb 26, 2016 at 12:30 PM, James <jk_eaton@hotmail.com> wrote:
> 
> > To quantify the question, one reference says 111,800 BTU per US gallon for
> > reformulated E10, vs 114,000 BTUs per US gallon for regular gasoline - a
> > 1.9% reduction in energy content.  (Other factors do come into play,
> > including the different motor octane and research octane numbers of the
> > E10, and the slightly lower viscosity, which may cause certain fuel
> > injection systems to inject more E10 per cycle, lowering fuel mileage.)
> >
> > I had an '83 VW Rabbit, CIS injection, that took a 10% mileage hit running
> > on a late '80s version of E10 - but had measurably faster acceleration in
> > gear, and much better hill climbing ability on the E10.  Every engine will
> > vary in its reactions.
> >
> > Perhaps the lack of fuel pump noise is due to the E10 picking up some of
> > the water (or rust) in your fuel tank and carrying it to the pump, which
> > the regular gas is not doing.  Do you have a fuel filter between your tank
> > and pump?
> >
> > James
> > Ottawa, ON
> >
> >
> > > Date: Fri, 26 Feb 2016 13:15:06 -0600
> > > From: jrodgers113@GMAIL.COM
> > > Subject: Re: Ethanol Free Gas.. No fuel pump buzzing?
> > > To: vanagon@GERRY.VANAGON.COM
> > >
> > > My understanding about the alcohol in fuel, is, that except for the
> > > enviromental factor (and that's questionable) gasohol is a rip. It simply
> > > doesn't have the btu's that gasoline has. So by adding alcohol to
> > gasoline
> > > you get a power reduction, yet you still pay the same price. I know the
> > > corn subsidy to the farmers has to be factored in somehow. Thats a hit on
> > > our taxes.
> > >
> > > Anybody got more?
> > >
> > > John
> > > On Feb 26, 2016 13:02, "Tyler Hardison" <tyler@seraph-net.net> wrote:
> > >
> > > > That's why I'm confused. I did nothing else to the fuel pump other than
> > > > fill up with Corn Likker free.
> > > >
> > > > The Butler Market Valero here in Bend carries it. Perhaps other
> > Bendites
> > > > know of a cheaper spot?
> > > >
> > > > On Fri, Feb 26, 2016 at 10:18 AM, David McNeely <
> > davmcneely40@gmail.com>
> > > > wrote:
> > > >
> > > > > Where are you that non-alcoholic fuel costs that much?  I generally
> > get
> > > > it
> > > > > for about 10 cents per gallon above the equivalent grade for
> > alcoholic.
> > > > > Currently locally (Spokane, WA) that amounts to $1.90 for
> > non-alcoholic
> > > > > regular.  But, I have to drive several miles across town, and have
> > been
> > > > > burning regular alcoholic that I buy for $1.75 from an outlet owned
> > by
> > > > the
> > > > > Spokane Tribe.  When I lived in Oklahoma non-alcoholic was widely
> > > > > available, but not here.  I get better mileage with non-alcoholic in
> > my
> > > > > Prius, but haven't been able to make an adequate comparison with the
> > > > > camper, since my driving conditions with it vary so much from trip to
> > > > > trip.  I believe it does better, however.
> > > > >
> > > > > How would the alcoholic stuff damage the fuel pump?  I understand its
> > > > > damaging fuel lines and connectors.  Are the pump innards plastic?
> > > > >
> > > > > mcneely
> > > > >
> > > > > On Fri, Feb 26, 2016 at 9:32 AM, Tyler Hardison <
> > tyler@seraph-net.net>
> > > > > wrote:
> > > > >
> > > > >> Yesterday I filled the tank with Ethanol Free gas (3.99/gal ouch) to
> > > > >> experiment.
> > > > >>
> > > > >> Observations:
> > > > >>
> > > > >> 1. Van is running a bit smoother.
> > > > >> 2. She's got a little more pep.
> > > > >> 3. The most puzzling thing: The fuel pump stopped buzzing.
> > > > >>
> > > > >> Is it possible that E10 is damaging our fuel pumps?
> > > > >>
> > > > >> --t
> > > > >>
> > > > >
> > > > >
> > > >
> >
> >