Subaru Impreza 2003 Service Manual page 60

RECOMMENDED MATERIALS
4. FLUID
Use the fluids specified in the table below. Do not mix two different kinds or makes of fluid.
Fluid
Automatic transmission fluid
Power steering fluid
Brake fluid
Clutch fluid
5. COOLANT
Use genuine coolant to protect the engine.
Coolant
Coolant
Water for dilution
6. REFRIGERANT
Standard air conditioners on Subaru vehicles use HFC134a refrigerant. Do not mix it with other refrigerants.
Also, do not use any compressor oil except for DH-PR.
Air conditioner
Refrigerant
Compressor oil
RECOMMENDED MATERIALS
Recommended
DEXRON III
DEXRON III
FMVSS No. 116 DOT3
FMVSS No. 116 DOT3
Recommended
SUBARU coolant
Distilled water
Recommended
HFC134a
DH-PR
RM-6
Alternative
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FMVSS No. 116 DOT4
Item number
000016218
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Item number
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Remarks
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Alternative
None
Tap water (Soft water)
Alternative
None
None