Expedition 4WD V8-281 4.6L SOHC (1998)
4. For the A/C condenser core, add 30 ml (1 ounce) of clean Motorcraft YN-12b refrigerant oil F2AZ-19577-AC (Canada: Motorcraft CYN-12b) or
equivalent meeting Ford specification WSH-M1C231-B to the A/C condenser core or the suction accumulator/drier inlet tube.
5. Add 60 ml (2 ounces) of clean Motorcraft YN-12b refrigerant oil F2AZ-19577-AC (Canada: Motorcraft CYN-12b) or equivalent meeting Ford
specification WSH-M1C231-B to the suction accumulator/drier inlet tube when performing each of the following repairs:
-
replacement of the A/C evaporator core orifice
-
replacement of the A/C compressor pressure relief valve
-
replacement of a refrigerant line
-
repair of an O-ring leak
-
repair of a charge port leak
6. Replacement of components that do not require discharge of refrigerant and resulting oil loss, such as the A/C cycling switch and the A/C pressure
transducer, do not require additional oil.
