Subject: Power steering fluid flush (mixed pentosins)

[C1J1Miller@aol.com]

Dave Puterbaugh wrote:
===========================
   Help!  I have both Pentosin 11s and 7.1 in my steering/brake system.  My
car is a 1991 200q,  20 valve.  I need to know the following:
1) what is the correct Pentosin?
2)  what damage can be caused by them being mixed in my system.
3)  what is the best way to flush out the bad mixture, and put in the
correct Pentosin.
============================
Dave: I believe the '91 200q uses the synthetic version (11s).  I believe they
are not very compatible (based on other's posts).
Here's a tech tip I found on the Blaufergnugen web page.  No affiliation, yada
yada ....
Chris Miller, Windham NH, c1j1miller@aol.com
see my site on the '91 200q...
http://members.aol.com/c1j1miller/index.html
=================================
TECH TIP: "Change Your Hydraulic Fluid" 
found at http://www.audiquattroparts.com/hydraul.htm
    Are you the owner of a 5000, 100, or 200? Have you changed your hydraulic
fluid lately?... This is one of the areas neglected most often on these
vehicles, and it is so simple to change.

Two of the root causes of failure in hydraulic pumps, steering rack and
pinions are the breakdown of hydraulic fluid and failure to change the
reservoir filter. Chances are that if you go out to your car right now and
look in the hydraulic fluid reservoir, your fluid is black instead of the nice
clean clear green it should be.

The hydraulic fluid reservoir is the long container (about 7" high x 4 1/2" in
diameter) just to the left of your brake master cylinder. As you remove the
fill cap you'll see that the cap has a spring and washer attached to it, they
apply pressure to the reservoir filter insert. Stick our index finger into the
reservoir and pull out the filter insert, clean or replace it.

Look into the reservoir, if the fluid is very dark we recommend that you drain
the reservoir fluid by disconnecting the hoses or sucking the fluid out. Then
remove the reservoir, including the mounting bracket, from the fire-wall and
clean it with a de-greasing solvent. With the hoses disconnected, turn your
steering wheel from side to side, removing the fluid from the rack and pinion.
hi extremely dirty cases, you should flush all the fluid out of the lines that
connect to the reservoir. Reinstall the reservoir and hoses and fill with
fresh fluid. 

 If you think removing the canister is too much work for you, get the turkey
baster and suck the fluid out of the reservoir.  Replenish the reservoir with
fresh fluid. Repeat this process three times at about 100-mile intervals. You
will waste fluid this way, but it eventually gets cleaner.

You must use special fluid in this system, it is a mineral-base aircraft
fluid, designed for wide extremes in temperatures. The Audi part number is
GOO-2000. Recently available is a red, synthetic version of this fluid. Both
are available at your dealership or at an "Independent Specialist". If you
fully flush the system, you will need about 2 1/2 liter's. I recommend that
you change this fluid every 25,000 miles. Your scheduled maintenance likely
does not include this important procedure. Doing this will extent greatly the
service life of your steering rack, hydraulic pump, brake servo, and other
parts!!

Oh, remember! If you do use the turkey baster, don't put it back into the
kitchen drawer! If you have any questions, please send them to: 

BLAUfergnugen! Inc.
4921 County Highway CR
Manitowoc, WI 54220
Price/info 920-758-3232
Fax: 920-758-3234
E-Mail: TALKQUAT@lamers.net