F 450 4WD Super Duty V10-6.8L VIN D (2004)
Evaporator Case: Service Precautions
CAUTION:
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Refrigerant compressor oil F73Z-19577-AA (Motorcraft YN-9-A) should be used to lubricate R-134a refrigerant system O-ring seals only
and should not be added to R-134a refrigerant systems as an A/C compressor lubricant. PAG refrigerant compressor oil
F7AZ-19D589-DA (Motorcraft YN-12-C) or equivalent meeting Ford specification WSH-M1C231-B only should be used as an A/C
compressor lubricant.
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Place protective caps over the open refrigerant lines to avoid contamination of the A/C system.
