If the oil temperature drops below 40°C or exceeds 90°C, the oil’s quality can deteriorate, leading to potential damage and reduced compressor life. When the oil temperature is too low (below 40°C), the oil becomes too viscous, causing increased friction within the compressor.
[pdf] An oil analysis ensures that the oil maintains the right viscosity, additives, and cleanliness levels required for efficient operation. Monitoring the oil’s condition helps prevent excessive wear and tear on critical components such as bearings and rotors.
[pdf] When the inlet/unloader valve is open, the air enters the compressor screw element. The screw element works like a pump and it compressed the air. During this process, oil is injected in the element. The oil is there to cool the air, as the air gets very hot during compression.
[pdf] 
