ISO 46 vs. ISO 68: Choosing the Right Oil for Your Rotary Screw Air Compressor
Rotary screw air compressors rely on high-quality oil to stay cool, lubricated, and protected. But with multiple viscosity grades available, many users wonder whether ISO 46 or ISO 68 is the better choice. The truth is that both oils perform well—but only when matched with the right operating conditions. This guide simplifies the differences and helps you decide which oil grade is ideal for your compressor and environment. Understanding Viscosity in Compressor Oil Viscosity is the oil’s thickness. ISO 46 = thinner ISO 68 = thicker Choosing the wrong viscosity can lead to overheating, increased wear, or reduced efficiency. The correct grade ensures proper lubrication, smooth cooling, and dependable performance. When ISO 46 Compressor Oil Is the Better Fit ISO 46 is designed for easier flow, especially when temperatures are moderate or low. Ideal for: Indoor or climate-controlled environments Light to medium workloads Facilities where compressors run at stabl...