Standard Procedure - Refrigerant Oil Level: Notes

When an A/C system is assembled at the factory, all components except the A/C compressor are refrigerant oil free. After the refrigerant system has been charged and operated, the refrigerant oil in the A/C compressor is dispersed throughout the refrigerant system. The receiver/drier, A/C evaporator, A/C condenser and the A/C compressor will each retain a significant amount of the needed refrigerant oil.

It is important to have the correct amount of refrigerant oil in the A/C system. This ensures proper lubrication of the A/C compressor. Too little oil will result in damage to the A/C compressor, while too much oil will reduce the cooling capacity of the A/C system and consequently result in higher discharge air temperatures.

NOTE:

The refrigerant oil in the A/C system is unique depending on the A/C compressor used. Use only PAG oils that are designed to work with the refrigerant type and A/C compressor in the vehicle. Always refer to the A/C Underhood Specification Label for the correct oil designation. The refrigerant oil container should be kept tightly capped until it is ready for use, and then tightly recapped after use to prevent contamination from dirt and moisture. Refrigerant oil will quickly absorb any moisture it comes in contact with, therefore, special effort must be used to keep all system components moisture-free. Moisture in the refrigerant oil is very difficult to remove and will cause a reliability problem with the A/C compressor.

NOTE:

Most reclaim/recycling equipment will measure the lubricant being removed during recovery. This amount of lubricant should be added back into the system. Refer to the reclaim/recycling equipment manufacturers instructions.

It will not be necessary to check the oil level in the A/C compressor or to add oil, unless there has been an oil loss. An oil loss may occur due to a rupture or leak from a refrigerant line, a connector fitting, a component, or a component seal. If a leak occurs, add 30 milliliters (1 fluid ounce) of refrigerant oil to the refrigerant system after the repair has been made. Refrigerant oil loss will be evident at the leak point by the presence of a wet, shiny surface around the leak.

Refrigerant oil must be added when an A/C condenser, A/C evaporator or A/C receiver/drier is replaced. See the Refrigerant Oil Capacities chart.

The refrigerant oil level in a new A/C compressor must first be adjusted prior to compressor installation.

1234yf oil levels can be adjusted through the use of an approved oil injection syringe (available through Mopar Service Equipment). Fill the syringe with the correct amount of the correct oil per the adjustment chart. With the system charged, connect the syringe tool to the vehicles' low pressure port. With the engine running at idle, with AC on and blower set to low. Slowly open the valve on the injector while observing the oil being drawn into the system. Once the oil is injected, close the valve, disconnect from the vehicle.

REFRIGERANT OIL TYPE
A/C COMPRESSOR	OIL TYPE
All Engines	* Use only ND-12 PAG oil

NOTE:

Always use the type of PAG oil listed for the model being serviced. See A/C Underhood Specification Label located in the engine compartment. Do not mix different types of PAG oils.

REFRIGERANT OIL CAPACITIES
COMPONENT	ml.	oz.
Total System Fill	130	4.4
A/C Condenser	30	1.0
A/C Evaporator	60	2.0
A/C Receiver/drier	30	1.0
A/C Compressor	Drain and measure the oil from the old compressor (See Compressor Oil Drain Procedure)