A4 Quattro Cabriolet V6-3.2L (BKH) (2007)
Refrigerant Oil: Specifications
Approved Refrigerant Oils And Refrigerant Oil Capacities
NOTE:
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As PAG (polyalkylene glycol) oil is highly hygroscopic (attracts water), opened containers are to be immediately re-sealed so as to be air-tight.
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PAG oil from containers which have been open for a lengthy period is no longer usable.
Approved refrigerant oils
NOTE:
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The oils used with refrigerant R12 are not suitable for refrigerant R134a.
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The name of the compressor manufacturer "Nippondenso" has been changed to "Denso".
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The refrigerant oil developed specially and exclusively for R134a refrigerant circuits is not commercially available.
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Refrigerant oils specifically designed for each compressor can therefore be obtained from the replacement parts range Parts List .
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The use of other refrigerant oils could cause system failure, as they do not always mix and thus circulate with refrigerant R134a (for compressor
lubrication).
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There are different refrigerant oils for "Zexel", "Denso" and "Sanden" compressors Parts List .
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The refrigerant oil (G 052 300 A2) for use in refrigerant circuits with "Denso" compressors (old name "Nippondenso") is also included in the
retrofit kit (part number 4A0 298 107 A) Parts List .
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Use is to be made for refrigerant circuits with "Zexel" or "Sanden" compressor of refrigerant oil with part no. G 052 154 A2 Parts List .
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For refrigerant circuits with "Zexel" compressors, use can be made of both the refrigerant oil (G 052 154 A2) and the refrigerant oil (G 052 200
A2) contained in the retrofit kit (part no. 4A0 298 107) Parts List .
Capacities for refrigerant oil
NOTE:
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For compressor assignment ("Zexel", "Sanden" or "Denso"), refer to vehicle-specific Repair Information, Heating, air conditioning or Air
conditioning and Parts List .
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With "Zexel", "Denso" and "Sanden" compressors, the amount of refrigerant oil in the replacement compressor corresponds to the total quantity of
oil to be added. On compressor replacement, the quantity of refrigerant oil in the compressor to be installed must therefore be adjusted (an
incorrect refrigerant oil quantity will damage the compressor).
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When pouring refrigerant oil out of replacement compressor (or malfunctioning compressor), a small quantity of oil generally remains in the
compressor (20 to 30 cu.cm). This refrigerant oil does not affect the function of the air conditioner and can therefore be ignored (always remains
in compressor).
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Following initial switch-on, the refrigerant oil is distributed throughout the entire refrigerant circuit.
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For refrigerant oil replenishment quantities on replacing malfunctioning refrigerant circuit components, refer to Heating, air conditioning Air
conditioning and Parts List .
Capacities for Audi A4 (8E_) 2001--> , Audi A4 Cabriolet (8H_) 2003-->
Characteristics of refrigerant circuit:
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Restrictor
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Reservoir
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"Denso" compressor with A/C Compressor Regulator Valve N280 (without A/C clutch) Heating, air conditioning and Parts List