Adrian

Just some info seeing as we have had a lot of questions regarding aircon
lately. This text refers to using R12 substitutes known as Drop Ins for pre
model year 1993 Porsches,
Ciao,
Adrian
911C4

Climate Control System-Refrigerant 134a Use

All

10/97

8703

Binder - Service Technical Bulletins

Climate Control System Refrigerant 134a Use

Vehicle Type: All

Model Year: Up to 1992

Concern:
Use of refrigerant substitutes. (sometimes referred to as "drop-in's")

Information:
In the interest of protecting the ozone layer, the manufacturing of
refrigerant type R12 has not been permitted since January 1, 1996. As a
replacement for refrigerant R12, most manufacturers, including Porsche, have
required the use of refrigerant type R134a. This applies to new vehicles (as
of 1993), as well as existing vehicles originally equipped with type R12
climate control systems.

In spite of the R12 restrictions, there are products being developed and
sold in the after market as R12 substitutes, or "drop-in's". These products
have NOT been tested for compatibility with Porsche vehicles, and therefore
ARE NOT APPROVED by Porsche. The only approved replacement for refrigerant
type R12 on Porsche vehicles is refrigerant type R134a.

Please refer to Technical Bulletin Group 8, number 9501 when retrofitting a
Porsche climate control system from refrigerant R12 to refrigerant R134a.
Special situations apply to those models not referred to in this Technical
Bulletin. Contact Technical Services before attempting a refrigerant R134a
retrofit on any model not covered in this Technical Bulletin.

"Drop-in" refrigerant R12 substitutes are not approved for use in Porsche
vehicles. Any damage or failure resulting from the use of these "drop-in's"
will not be considered a warranty matter.