You did not specify your year so I am basing my answer on a 1990
(though it shouldn't matter). I assume you are speaking of fluid for
your power steering.
Based on discussions found at search.audiworld.com for you model you
should be using MINERAL based fluid...the most recommended seems to be
Pentosin 11s Red Cap.
Try GPR if you need online ordering:
http://catalog.eautopartscatalog.com/gpr/060606/wizard.jsp?header=http://www.gprparts.com/header.txt&footer=http://www.gprparts.com/footer.txt&partner=gpr&clientid=gprparts.com&baseurl=http://www.gprparts.com/&cookieid=1UE13C6HB1UE13CB5D&year=1990&make=AU&model=80--001&category=All&part=P%2FS+Fluid
or your local Audi repair shop.
Alternatives are available from Castrol, Febi-Bilstein and TRW.
Bleed/Refill
Flushing the hydraulic system every 25K miles or so will extend the
life of many of the expensive hydraulic components, including the
pump, steering rack, and brake servo. This is not usually part of the
prescribed maintenance, so most cars are still running around with the
original fluid (plus years of accumulated contaminants).
Begin by emptying the reservoir with a turkey baster. Then put the
front end up on jackstands and turn the steering lock-to-lock a few
times. This will purge the remaining fluid out of the rack. Pump the
brake pedal until it becomes stiff. This will release pressure from
the "bomb" and return more fluid to the reservoir. Once you've sucked
out all the old stuff, clean out the reservoir with a degreaser and
clean or replace the filter inside.
Now fill the reservoir to the top with fresh fluid and start the
engine. The system will basically fill and bleed itself, so just
refill the reservoir as the fluid is distributed through the hydraulic
components. Once the system appears filled, slowly turn the wheel
lock-to-lock to purge the last air bubbles out. You will initially
hear some whooshing/groaning as the air is purged out, then the system
should quiet down. The total capacity of the system is about one
liter, but you should probably have two cans just in case you need
more.
Hope this is helpful to you.
Good Luck. |
