Volkswagen Golf 1999 Service Manual page 3856

A/C refrigerant system
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)
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Temperature/pressure relationship
R-134a in an enclosed container will have a
specific temperature/pressure relationship.
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 measures
Page 87-69
regarding proper oil usage.
Página 8 de 21
for Warnings and Cautions
87-76
13/2/2005