Pentosin

[cobram at juno.com]

I thought this had been put to rest.  I guess not, probably too many
posts so nobody bothers to read the ones that don't pertain to them at
the moment.  Mixing or using the previous hydraulic fluid will not ruin
ANYTHING, period.  The seals are all rated for 10W/? motor oil as posted
in the past by an engineer lister.  The pump is the ONLY part of the
hydraulic system that is effected by non-hydraulic fluid use.  I will
post the bulletin again since the archives can get taxing sometimes.

I have been running, gasp, $40 a 5gal pail Mobil DTE13M in my 4 Pento$in
systems for years now with no adverse effects.  Experience is the same as
when running the 11S, which means at least one leak a year somewhere in
the system.  I'm on my 2nd 5 gal. pail too,  considering my newest type
44 is 12 years old and the oldest is 18+ years old, finding a Pento$in
stain in the driveway is as unexpected as the sun rising in the morning.
The newer hydraulic systems are even less finicky, since pump pressures
were reduced in later years.

Here is the official word from Audi on the 7.1 and 11S compatibility:

AUDI TSB reference Bulletins thru 1993 (issued Oct 1994)
Audi tech bulletin 48-89-T07, Nov '89 (EXACTLY QUOTED)
"HYDRAULIC SYSTEM FLUID - NEW TYPE
Hydraulic system fluid has been improved as of M.Y. 1990

New: Hydraulic Fluid, part number unchanged.
This fluid is more temperature resistant
Color: Olive

Old: Hydraulic Fluid, PN 002 000
Color: Green

The new hydraulic fluid can be identified by the RED cap on
the container

Note: New and old hydraulic fluid can be mixed if necessary"
--------------------------------------------------------------

Do NOT mix either 7.1 or 7.11 mineral oil in audi hydraulic
systems which  call for "Dexron Automatic Transmission Fluid". The ATF
hydraulic systems are  usually identified by the metal resevoir, the
mineral oil 7.1
and 7.11s  hydraulic systems are usually identified by the plastic
resevoir. ATF
application are usually found on the older 4000, Urq and pre
84 hydraulic  systems (USA). The 7.1 non synthetic mineral oil fluid is
usually found in  all 1984> 1989 audi 500/200 cars (USA) The new 7.11
fluid is
found from the  factory in some M.Y. 1990 audis, and all 1991> audis.
Given
the better heat  resistant characteristics of the 7.11s (synthetic
mineral
oil) fluid, it is  the preferred fluid for all audi applications
specifying G 00
2 000 mineral  oil hydraulic fluid.

If you have any questions regarding the application for your
specific car,  please consult either your owners manual, the label on
your
resevoir, or your  audi dealer.

BCNU,
http://www.geocities.com/cobramsri/

Larry C Leung <l.leung at juno.com> writes:
> Lee,
>
> Someone sold you the wrong stuff. You need to use Pentosin 11S
> (green can, red cap) in your 200, not 7.1 (white can, green cap).
> Same thing for the 100.  7.1 can ruin your seals. Switched over
> with the 5K to 100/200 model change or thereabouts. Return
> the 7.1 for 11S.
>
> LL - NY
>
>
>
> > Reply-To: <lee at wheelman.com>
> > From: "Lee Levitt" <lee at wheelman.com>
> > To: <quattro at audifans.com>
> > Date: Thu, 29 Aug 2002 16:44:42 -0400
> > Subject:  Pentosin
> >
> > A quick question about Pentosin...I have a couple of quarts of
> > Pentosin left
> > over from my 200t. I recently bought a couple of new quarts, and
> the
> > spec
> > seems to be different - 7.1 versus 10 or thereabouts. Are there
> > different
> > types of Pentosin available, or was this an upgrade of the
> product?
> >
> > The reason I ask is that a friend has a '92 100 and needs some
> > Pentosin. I
> > intend to give him my older cans, and was wondering about the
> > difference
> > between the two...
> >
> > TIA,
> >
> > Lee
> > '95.5 S6 avant
> > '96 A6 quattro avant
> >
>
>