Explorer AWD V6-4.0L VIN K Flex Fuel (2003)
Refrigerant Oil: Service Precautions
CAUTION: 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 refrigerant 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.