Compressor Oil Defined :: Radiator Glossary & Radiator Terms

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Radiator Glossary of Terms

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Compressor Oil
The oil within the A/C system that lubricates the compressor. R12 systems use a special type of mineral oil. R134a systems use either a PAG or ester-based oil. A certain amount of compressor oil must be in the system at all times to prevent compressor dam