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Amarok 2011 ➤ , Beetle 2012 ➤ , Bora 1999 ➤ , CC 2010 ➤ , CC 2012 ➤ , ...
Air conditioning system with refrigerant R134a - Edition 10.2014
Note
♦ Do not store refrigerant machine oils open to the atmosphere
since they are very hygroscopic (they readily absorb water).
♦ Always keep oil containers tightly sealed.
♦ Do not reuse used refrigerant machine oil.
♦ Disposing of used oil: Volkswagen InfoNet; Operation; Man‐
uals and dealership documentation; Service handbook;
15. Environmental Protection; Follow link “Environmental pro‐
tection in the dealership and in the workshop” in "General
notes"; 4. Waste disposal; 6. Disposal channels; g. Disposal
of used oil; Refrigerant oils
♦ Used refrigerant machine oils from systems with halogenated
hydrocarbons (at least one hydrogen atom has been replaced
by e.g the halogens fluorine, chlorine, bromine or iodine) must
be disposed of as waste requiring particular care. It is imper‐
missible to mix such oils with other oils or materials. Proper
storage and disposal must be performed according to guide‐
lines in the country where the work is being performed. Ob‐
serve, for example in the Federal Republic of Germany, the
climate protective regulation concerning chemicals; closed
substance cycle waste management and ensuring environ‐
mentally compatible waste disposal (in other countries other
statutes and regulations may apply)
♦ Reference sources for technical rules and safety at work / ac‐
cident prevention for the Federal Republic of Germany
♦ Sources in other countries may be obtained from the respon‐
sible authorities
♦ Ester-based oils are suitable only for larger systems (not for
air conditioning systems in cars).
1.7.1
Properties of refrigerant oils
The most important properties are high solubility in refrigerants,
good lubrication characteristics, freedom from acid and very low
water content. For this reason, only certain oils may be used. A
list of approved refrigerant oils and quantities can be found in the
vehicle-specific workshop manuals in ⇒ Rep. gr. 00 or ⇒ Rep.
gr. 87 .
The PAG oils suitable for refrigerant R134a are strongly hygro‐
scopic and are immiscible with other oils. Therefore, opened
containers should be closed again immediately to protect them
from moisture. Refrigerant oils age under the influence of mois‐
ture and acids; they become dark, viscous and aggressive to‐
wards metals.
Note
♦ For refrigerant circuits with refrigerant R134a, use only the oil
approved for the air conditioner compressor. See ⇒ Rep. gr.
00 or ⇒ Rep. gr. 87 in the repair manual for the specific ve‐
hicle.
♦ Disposing of used oil: Volkswagen InfoNet; Operation; Man‐
uals and dealership documentation; Service handbook;
15. Environmental Protection; Follow link “Environmental pro‐
tection in the dealership and in the workshop” in "General
notes"; 4. Waste disposal; 6. Disposal channels; g. Disposal
of used oil; Refrigerant oils
8
Rep. gr.00 - Technical data
English 
