Pathfinder 2WD V6-4.0L (VQ40DE) (2009)
Refrigerant Oil: Service and Repair
OIL
Maintenance of Oil Quantity in Compressor
The oil in the compressor circulates through the system with the refrigerant. Add oil to compressor when replacing any component or after a large
refrigerant leakage has occurred. It is important to maintain the specified amount.
If oil quantity is not maintained properly, the following malfunctions may result:
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Lack of oil: May lead to a seized compressor
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Excessive oil: Inadequate cooling (thermal exchange interference)
OIL
Oil name: NISSAN A/C System Oil Type S or equivalent
CHECKING AND ADJUSTING
CAUTION:
If excessive oil leakage is noted, do not perform the oil return operation.
Start the engine and set the following conditions:
Test Conditions
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Engine speed: idling to 1,200 rpm
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A/C switch: ON
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Blower fan speed: HIGH
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Temperature control: optional [set so intake air temperature is 25° to 30° C (77° to 86°F)]
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Intake position: RECIRCULATION mode
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Perform oil return operation for about ten minutes
Adjust the oil quantity according to the following table.
Oil Adjusting Procedure for Components Replacement Except Compressor
After replacing any of the following major components, add the correct amount of oil to the system.
Oil Adjustment Procedure for Compressor Replacement