Brand of Gasoline

[jlagnese at massed.net]

My 87 16 V Scirocco not only gets a noticeable
increase in power, the mileage goes up 3 or4 mpg.
---- Original message ----

  Date: Wed, 19 Sep 2012 18:55:04 -0400
  From: Grant Lenahan <glenahan at vfemail.net>
  Subject: Re: Brand of Gasoline
  To: John Lagnese <jlagnese at massed.net>
  Cc: "'Fay Kelley'" <iceisit at earthlink.net>,
  <quattro at audifans.com>
  >I will write it yet again.>>It not as simple as
  the statement below. High compression ration and
  advanced timing is only an issue when at WOT. if
  you are not at WOT there is less air and fuel, and
  therefore it is compressed less and has less heat
  rise. PV=NRT, and P will be lower, so T will be
  lower. With T lower, there will be no pre-ignition
  and no need to back off timing.>>So it ONLY
  benefits mileage if you are at WOT, whcih is a
  tiny % of time>>Grant>>On Sep 18, 2012, at 8:28
  PM, John Lagnese wrote:>>> If your engine has a
  knock sensor that may just be a function of the>>
  advanced timing. The knock sensor retards the
  timing when pre-ignition is>> detected. That's why
  higher octane results in more power and better
  mileage.>> >> -----Original Message----->> From:
  quattro-bounces at audifans.com
  [mailto:quattro-bounces at audifans.com] On>> Behalf
  Of Fay Kelley>> Sent: Monday, September 17, 2012
  11:54 PM>> To: quattro at audifans.com>> Subject:
  Brand of Gasoline>> >> I have been using Chevron
  gas almost exclusively for years.>> The station's
  card reader didn't work in Cottonwood, so I went
  down the>> street>> to the Union 76, the gas was
  about 50 cents a gallon more but>> lasted way
  longer.>> >> Normally when I drive from Sedona to
  Phx I must get>> gasoline somewhere before
  returning home.>> >> This time I drove from Sedona
  to PHX and back on>> ONE HALF TANK OF GASOLINE. I
  went on Thurs.>> and didn't buy gas again til
  Sunday nite.>> >> How can this be?>> >> Fay>> --
  >> >> >> >> >> >> >> >>
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