DeTomaso Mailing List: April 2000, Message #439

> Dear Steve and Forum,
>
>             Just to remind you that it is never really easy, my tar baby
> experience came AFTER I had filled it up and used POR-15 Gas Stabilizer
> (supposedly reputable stuff) and the combo had been sitting about a week.
> It still happened.  One could debate if the problem had been present
before
> and then finally, coincidentally, became apparent after the POR15 or not.
> To paraphase one of my friends,  "Just don't buy bad gas.....".
>
>                     On the frontier of volitile petrochemistry
distillates,
> Chuck Engles
>
>
>
> ----- Original Message -----
> From: Steve (AIA) <STEVE@AIAELPASO.COM>
> To: Multiple recipients of list <detomaso@realbig.com>
> Sent: Thursday, April 13, 2000 9:28 AM
> Subject: Fw: Fw: BAD GAS!!
>
>
> >
> > ----- Original Message -----
> > From: Cal Eustaquio <ceustaqu@volta.ee.calpoly.edu>
> > To: Steve (AIA) <STEVE@AIAELPASO.COM>
> > Cc: Multiple recipients of list <detomaso@realbig.com>
> > Sent: Wednesday, April 12, 2000 9:37 AM
> > Subject: Re: Fw: BAD GAS!!
> >
> >
> > > ?Que pasa, Steve y mi amigos Panteras?
> > >
> > > What was the verdict with regards to the source of the "tar
formation"?
> > > Any follow up? Thanks. Cal #2428r.
> > >
> >
> >
> > Cal, (and the rest of the forum),
> >
> > It seems that the tar formation is a product of letting the gas sit idle
> in
> > the tank.  I have a machine show re-doing my heads now.  The owner of
the
> > shop has seen this before, and the story is almost always the same.   It
> > happens when you let the car sit for three or four weeks.  Evidently the
> gas
> > that is being produced now has some additives which sink to the bottom
of
> > the tank and start to congeal.  It evidently doesn't ever go out of
> > suspension, but rather concentrates whatever it is in the bottom.  This
> > additive is then picked up in heavier concentrations than normal, since
> the
> > fuel pickup is at the bottom of the tank as well.  When it is heated,
> > flowing into the heads, it will come out of suspension, and become the
> tarry
> > substance I found on my valve.  (This is all the shop owner's
> explanation.)
> > It seems logical and makes some sense to me, especially not being a
> chemical
> > engineer.  He suggest that those of you whose cars sit idle for a time
use
> a
> > fuel additive to prevent this from happening.  He also suggest that the
> > problem can be exacerbated in Panteras, since the gas tank is in the
> engine
> > compartment and is subject to higher than normal temperatures.  Gary
Hall,
> > who has a number of cars that sit idle for long periods of time, uses
> "Bill
> > Hurst Gas Treatment" which he says is available directly from Hurst out
of
> > the Hemmings Motor News advertisements.  I, for one, am going to try
this,
> > as well as try to drive the P-car at least once a week from now on.  I
> also
> > will not fill up the tank, unless I know I'm going to be driving it
enough
> > to run it close to empty soon.  I still don't have any conctete answers
on
> > the formations, but if anyone wants to see some UGLY jpegs, I'll send
them
> > to you.
> >
> > Steve R. Carvajal
> >
> >
>