---- David Beierl <dbeierl@attglobal.net> wrote:
> At 08:05 PM 2/5/2012, Dave Mcneely wrote:
> >and are there if at all, for marketing reasons.  mcneely

well, you are right that gasolines contain chemicals to improve their performance.  but most if not all those chemicals are the same across brands.

this one, however, was unique!!  Phlash!!  i remember both the Phlash and the pink air promotions.

http://en.wikipedia.org/wiki/Petrofina

mcneely

>
> I can't agree with that.  At the time our vans, at least the earlier
> ones, were being made, fuel injection was becoming common and
> injector clogging was a problem because of insufficient detergents in
> gasoline; and various car makers specified acceptable brands/grades
> for use in their vehicles.  BMW developed a testing standard and
> classified brands as acceptable or not based on that standard.
>
> Naturally this situation would not go on forever as fuel injection
> became ubiquitous, and as far as I know all gasoline now sold
> contains enough detergent to eliminate this problem.
>
> I'm with you on Shell's "nitrogen" marketing.  Is the stuff
> inert?  Is it explosive?  Does it increase NOx emissions?  Curious
> minds would like some explanation beyond "Now!  With NITROGEN Wheeeee!"
>
> Yours,
> DAvid
>

--
David McNeely