Different Refrigerants, Oils
WARNING: This page is about a different car, the 2002 Volvo C70, 2001 Volvo C70, 2000 Volvo C70, 1999 Volvo C70, and 1998 Volvo C70. However, it is still accessible from the selected car via links, so may be relevant.
A refrigerant needs to fulfill a number of important requirements. Amongst other things, it must be able to mix with oil and be non-corrosive. This is to provide good compressor lubrication and to prevent the metals and seals in the system from deterioration.
In older Volvo cars, R12 (CFC compound) is used as refrigerant. But in newer cars this has been changed to R134a (HFC compound) for environmental reasons. In addition, kits to convert and adapt older cars for R134a have been developed.
There is a decal on, or in the vicinity of, the receiver drier. The color of the decal indicates which types of refrigerant and oil the system is filled with.
| Decal Color | Refrigerant | Oil Type | Color of Seals |
|---|---|---|---|
| White | R12 | Mineral | Black, blue 2 |
| Yellow | R134a (factory filled) | PAG 1 | Yellow, green 3 |
| Light blue | R134a (Retrofit) | Ester | Yellow |
Notes
- PAG = Poly Alkylene Glycol Different PAG oil depending on the compressor. See the service information.
- Black = early version, Blue = late version.
- Green = may only be used for S40/V40.
CAUTION:
The correct refrigerant, oil type and seals must be used in the respective systems. Incorrect refrigerant and/or oil can result in the compressor overheating and seizing. In addition this can cause damage to hoses and seals.