Volkswagen Golf 1999 Service Manual page 3858

A/C refrigerant system
http://ebahn.bentleypublishers.com/vw/servlet/Display?action=Next&type=repair&id=...
Flammability
R-134a refrigerant is not flammable.
Refrigerant containers
DO NOTexceed maximum rated capacity of
refrigerant container.
Leak detection
Use halogen leak detector Hitec HI400A-
TELor equivalent to check for R-134a
system leaks. This tool can also be used to
detect leaks in R-12 systems. Many
currently available R-12 leak detectors
cannot detect R-134a refrigerant leaks.
R-134a 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.
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