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Home >> Subaru >> 2006 >> Legacy F4-2.5L DOHC Turbo >> Repair and Diagnosis >> Heating and Air Conditioning >> Refrigerant Oil >> Service Precautions
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Refrigerant Oil: Service Precautions

CAUTION

COMPRESSOR OIL
- HFC-134a compressor oil has no compatibility with that of CFC-12 system.
- Use only Denso Oil 8 which is a manufacturer authorized compressor oil for HFC-134a system.
- Do not mix multiple compressor oils.
If CFC-12 compressor oil is used in the HFC-134a A/C system, the compressor may become stuck due to poor lubrication, or the refrigerant may leak due to swelling of rubber parts.
On the other hand, if HFC-134a compressor oil is used in a CFC-12 A/C system, the durability of the A/C system will be lowered.
- HFC-134a compressor oil is very hygroscopic. When replacing or installing/removing A/C parts, immediately isolate the oil from atmosphere using a plug or tape. In order to avoid moisture, store the oil in a container with its cap tightly closed.
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