Why Engine or Transmission Oil Should Never Be Used in Rotary Screw Air Compressors
Your rotary screw air compressor is one of the hardest-working pieces of equipment in your facility, and the oil inside it plays a far greater role than most operators realize. Choosing the wrong lubricant—such as engine or transmission oil—might seem like a harmless shortcut, but in reality, it can cause efficiency losses, mechanical failures, and even void your warranty. Here’s why using the right compressor oil is essential. What Makes Compressor Oil Different? Rotary screw compressors don’t just need lubrication. Their oil has multiple critical jobs to perform: Lubricating moving parts to minimize wear and friction. Absorbing and dissipating heat generated in the air-end. Creating a tight seal between rotors to improve efficiency. Preventing corrosion and contamination inside the system. This multi-function demand is why compressor oils are engineered with very specific formulations—ones that automotive oils are not designed to meet. The Risks o...