Taurus V6-182 3.0L DOHC SHO (1992)
Refrigerant Oil: Service and Repair
Refrigerant Oil
R-12 Systems
ADDING REFRIGERANT OIL
The compressor uses a special refrigerant oil. It is important that only the specified type and quantity of refrigerant oil be used in the compressor. If there
is surplus oil in the system, too much oil will circulate with the refrigerant, reducing the cooling capacity of the system. Too little oil will result in poor
lubrication of the compressor.
When it is necessary to replace a component of the refrigeration system, the correct procedures must be followed to ensure the total oil charge on the
system is correct after the new component is installed. During normal A/C operation, some refrigerant oil is circulated through the system with the
refrigerant and some is retained in the compressor. If certain components of the system are removed for replacement, some of the refrigerant oil will go
with the component. To maintain the original total oil charge, it is necessary to compensate for the oil lost by adding oil to the system with the
replacement part.
R-12 REFRIGERANT OIL
R-12 system vehicles require the use of a 500 viscosity mineral based refrigerant oil known as YN-9. This type of refrigerant oil was made specifically
for R-12 systems and is not suitable for use in R-134a systems. Never use R-12 refrigerant oil YN-9 in R-134a systems.
CAUTION: Do not add R-134a refrigerant oil to an R-12 system. Also do not add R-12 refrigerant oil YN-9 to an R-134a system. Mixing these two
types of refrigerant oils may cause poor lubricant circulation resulting in component failure and damage to the A/C systems.
R-134a Systems
ADDING REFRIGERANT OIL
The compressor uses a special refrigerant oil. It is important that only the specified type and quantity of refrigerant oil be used in the compressor. If there
is surplus oil in the system, too much oil will circulate with the refrigerant, reducing the cooling capacity of the system. Too little oil will result in poor
lubrication of the compressor.
When it is necessary to replace a component of the refrigeration system, the correct procedures must be followed to ensure the total oil charge on the
system is correct after the new component is installed. During normal A/C operation, some refrigerant oil is circulated through the system with the
refrigerant and some is retained in the compressor. If certain components of the system are removed for replacement, some of the refrigerant oil will go
with the component. To maintain the original total oil charge, it is necessary to compensate for the oil lost by adding oil to the system with the
replacement part.
R-134a REFRIGERANT OIL
The refrigerant oil required for R-134a A/C systems is a Polyalkalylene Glycol (PAG) oil, Motorcraft YN-12b or equivalent meeting Ford specification
WSH-M1C231-B. This type of oil contains special additives required for the A/C compressor and was made specifically for R-134a systems and is not
suitable for use in R-12 systems. Never use an R-134a refrigerant oil in R-12 systems.
CAUTION: Do not add R-134a refrigerant oil to an R-12 system. Also do not add R-12 refrigerant oil YN-9 to an R-134a system. Mixing these two
types of refrigerant oils may cause poor lubricant circulation resulting in component failure and damage to the A/C systems.
During Component Replacement
EVAPORATOR CORE
Add 88.71 ml (3 oz) of clean refrigerant oil to the accumulator/drier inlet tube whenever the evaporator core is replaced. This will compensate for the
refrigerant oil lost in the replaced evaporator core.
NOTE: Whenever an evaporator core is replaced, it will be necessary to replace the suction accumulator/drier.
