Refrigerant Oils: Notes

NOTE: For compressor applications, see COMPRESSOR APPLICATIONS & BODY DESIGNATIONS article. DO NOT exceed A/C system refrigerant oil capacity when servicing system. See REFRIGERANT OIL & REFRIGERANT SPECIFICATIONS article.

NOTE: Use only specified oil for A/C system or compressor. Always check underhood A/C specification label or A/C compressor label before adding refrigerant oil to A/C compressor/system.

Use only NEW, moisture-free refrigerant oil in A/C systems. Refrigerant oil is highly refined, with a very low moisture content. Oil container must be tightly closed when not in use, or moisture from air will be absorbed into refrigerant oil.

Refrigerant R-134a systems use Polyalkylene Glycol (PAG) refrigerant oil. Using a mineral oil based lubricant with R-134a systems will result in A/C compressor failure due to lack of proper lubrication.

All compressors have different lubrication requirements and use different Polyalkylene Glycol (PAG) refrigerant oils. Use only the specified PAG refrigerant oil for appropriate system and A/C compressor. Always check underhood A/C specification label or A/C compressor label before adding refrigerant oil to A/C compressor/system. See listing of refrigerant oils currently available from vehicle manufacturers.