Base Oil SN150 is a Group I solvent-refined mineral oil commonly used as a base stock in lubricants, such as engine oils, gear oils, and industrial lubricants. It has a viscosity grade of 150 SUS (approx. 32 cSt at 40°C), making it suitable for blending with other additives. SN150 offers good oxidation stability, low volatility, and consistent performance, making it ideal for light to medium-duty lubrication applications.