Volkswagen Passat 1995 Official Factory Repair Manual page 4101

A/C refrigerant system, notes
Temperature in C ( F) Pressure in bar (psi)
-30 (-22)
-20 (-4)
-10 (14)
0 (32)
10 (50)
20 (68)
30 (86)
40 (104)
50 (122)
60 (140)
70 (158)
http://ebahn.bentleypublishers.com/vw/servlet/Display?action=Goto&type=repair&id=VW.B4.HA01.87.1
Temperature/pressure relationship
Similar to R-12 refrigerant, R-134a in an
enclosed container will have a specific
temperature/pressure relationship as follows:
0.0 (0.0)
0.3 (4.4)
1.0 (14.5)
1.9 (27.5)
3.1 (45.0)
4.7 (68.2)
6.7 (97.2)
9.1 (132.0)
12.2 (177.0)
15.8 (229.2)
20.2 (293.0)
Refrigerant oil
A special Polyalkylene Glycol (PAG) synthetic oil
is used in R-134a systems. This oil is NOT
compatible with mineral based oils used in R-12
systems. See safety precautions starting
87-1
proper oil usage.
, for Warnings and Cautions regarding
Page 8 of 15
87-8
Page
12/7/2004