Refrigerant Oil Adding
NOTE:
During normal A/C operation, oil is circulated through the system with the refrigerant, and a small amount is retained in each component. If certain components of the system are removed, some of the PAG oil will go with the component. To maintain the original total oil charge, it is necessary to compensate for the oil lost by adding oil to the system with the new part.
- Refer to the chart below for refrigerant oil adding amounts and methods of installation.
| Component |
PAG Oil Amount |
Method of Adding |
| A/C Compressor |
Refer to ADDING REFRIGERANT OIL AFTER A/C COMPRESSOR REPLACEMENT , plus the amount collected during recovery |
Add or remove directly through A/C compressor drain/fill bolt. |
| Receiver/Drier |
Refer to ADDING REFRIGERANT OIL AFTER NEW RECEIVER/DRIER REPLACEMENT |
Add directly to low-side service port during system charging. |
| Evaporator Core |
45 ml (1.5 fl oz) added to the amount collected during refrigerant recovery |
Add directly to evaporator core inlet tube or inject to low-side service port during system charging. |
| Condenser Core |
60 ml (2 fl oz) added to the amount collected during refrigerant recovery |
Add directly to condenser core inlet or inject to low-side service port during system charging. |
| Thermostatic Expansion Valve (TXV) |
The amount collected during refrigerant recovery |
Inject to low-side service port during system charging. |
| Refrigerant Hose/Line |
30 ml (1 fl oz) added to the amount collected during refrigerant recovery |
Inject to low-side service port during system charging. |
| O-ring Leak Repair |
30 ml (1 fl oz) added to the amount collected during refrigerant recovery |
Inject to low-side service port during system charging. |
| Service Port Leak Repair |
30 ml (1 fl oz) added to the amount collected during refrigerant recovery |
Inject to low-side service port during system charging. |