In the last decade, the automotive industry has seen rapid changes looking to improve fuel economy and energy efficiency in mechanical systems. These changes present new requirements and specifications for automotive lubricants. Rapid development of Hybrid and Electric Vehicles (EV) with new operating conditions, along with using lower viscosity lubricants to improve energy efficiency, brings new challenges for lubricant and fluid developments, particularly for driveline fluids. Base oil properties have become more critical as lubricants shift to ultra-low viscosity, where balance of the lowered viscosity and desirable physical properties becomes challenging.
In this study, different blends have been developed using synthetic base oils, Gr IV and Gr V, in comparison with mineral base oils, Gr II/+ and Gr III/+. Different tribological and physiological properties of blends have been investigated.
