RAM 2500 Truck 2WD V8-5.7L VIN D (2004)
Refrigerant Oil: Service and Repair
Refrigerant Oil Level
STANDARD PROCEDURE - REFRIGERANT OIL LEVEL
WARNING: REFER TO THE APPLICABLE WARNINGS AND CAUTIONS FOR THIS SYSTEM BEFORE PERFORMING THE
FOLLOWING OPERATION.
CAUTION: The refrigerant oil in the R-134a A/C system is unique depending on the A/C compressor used. Use only PAG oils that are designed to
work with R-134a refrigerant and the A/C compressor in the vehicle. Always refer to the underhood A/C System Specification Label for the correct oil
designation.
It is important to have the correct amount of lubricant in the A/C refrigerant system to ensure proper lubrication of the A/C compressor. Too little
lubricant will result in damage to the compressor. Too much lubricant will reduce the cooling capacity of the A/C system and consequently result in
higher discharge air temperatures.
The lubricant used in the compressor is polyalkalene glycol PAG lubricant. Only the refrigerant lubricant approved for use with this vehicle should be
used to service the system. Do not use any other lubricant. The lubricant container should be kept tightly capped until it is ready for use. Refrigerant
lubricant will quickly absorb any moisture it comes in contact with.
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
component replacement, or a rupture or leak from a refrigerant line, connector fitting, component or component seal. If a leak occurs, add 30 milliliters
(1 fluid ounce) of the recommended 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.
