- GOOD CHEMICAL STABILITY :- LUB OIL SHOULD NOT REACT CHEMICALLY WITH THE REFRIGERANT AND MATERIAL.
- GOOD THERMAL STABILITY :- LUB OIL SHOULD NOT FORM HARD CARBON DEPOSIT OR HOTSPOT IN COMPRESSOR.
- LOW VISCOSITY :- TO MAINTAIN GOOD LUBRICATION PROPERTIES AT HIGH TEMPERATURE AND GOD FLUIDITY AT LOW TEMPERATURE.
- LOW WAX VISCOSITY :- AT LOW TEMPERATURE WAX CAN FORM IN LUB OIL. HENCE LUB OIL MUST HAVE LOW WAX CONTENT WHICH BLOCK THE FILTERS AND DECREASE THE PRESSURE OF LUB OIL
- LOW POUR POINT :- THE ABILITY OF OIL TO REMAIN IN FLUID STATE AT A PLANT EVAPORATING TEMPERATURE.
- LOW FLOC POINT :- IT IS THE MOST IMPORTANT PROPERTY OF LUB OIL IN REFRIGERATION SYSTEM AS IT HAPPENS ONLY IN THE PRESENCE OF LUB OIL.
- MOISTURE AND ANTI FOAM CHARACTERISTIC