Pak_37

The Porsche Technical Service Bulletin recommends utilizing Pentosin CHF 11S in place of the power steering fluid originally called for in the manual. When we went to the dealership to pick some up they sold us Pentosin 202 and indicated that it's a newer version and a replacement/equivalent product to CHF 11S - before topping up our existing fluid we wouldn't mind opinions. One other fact for consideration, the fluid the in car is low - we have no documentation to know exact what fluid is currently in there.

Thanks very much.

Indycam

Do you have a copy of that TSB ?

The manual for my car asks for atf , dexron .

parsecnc4

+1

jimq

ATF dexronIII is what you use.

Pak_37

This is the TSB:

Steering Gear - New Type Oil
Group 4
Number 9606
Model
6 Cyl.
Part Identifier 4800
June 11, 1996
Subject:
New Type Oil for Steering Gear
ATTENTION:
Service Manager / Service Technician
Model Affected:
911 Carrera 2 and 4, Model Years 1989 to 1994,
911 Turbo, Model Years 1991, 1992 and 1994, and
911 Carrera (993) 1995 Model Year on
Concern:
In production, the power assist steering system is now filled with Pentosin CHF 11S fluid (green in color).
General Information:
From the following VIN numbers, the power assist steering system is factory filled with Pentosin CHF 11S fluid:
As of March 25, 1996 from VIN:
99 9 TS 32 3082 Coupe
99 3 TS 34 1781 Cabriolet
99 8 TS 38 5439 Targa
Pentosin has been selected for use because of better and more uniform viscosity behavior at low ambient temperatures.
Vehicles of the model types affected produced before the above mentioned VIN numbers used ATF in the power assisted steering system. It is now permitted to use Pentosin CHF 11S in these vehicles as well.
ATF fluid and Pentosin CHF 11S fluid can be mixed. In vehicles produced before the above mentioned VIN numbers, Pentosin CHF 11S fluid can be used to top off the fluid reservoir.
The 1996 911 Turbo uses Pentosin CHF 11S fluid in the steering and hydraulic assisted clutch systems. In this system, ATF must not be mixed with Pentosin CHF 11S.
Vehicles having repairs made to the steering gear that involve loss of the steering fluid should be refilled with Pentosin CHF 11S fluid.
Parts Information:
Pentosin CHF 11S fluid (1 Liter), part number - 000 043 203 33

parsecnc4

Looks like CHF 202 superceeded CHF 11S

http://www.lufteknic.com/Merchant2/m..._Code=PS_Fluid

I would stick with this for the 964/965 Power Steering.

http://www.lufteknic.com/Merchant2/m..._Code=PS_Fluid