Mobil SHC 639 is an exceptional transmission and bearing oil that is formulated to provide outstanding performance in equipment protection, oil life, and trouble-free operation. It is scientifically developed with the latest proprietary and patented Mobil SHC technology to provide outstanding and balanced performance in demanding high temperature applications. Key Features: Excellent low temperature properties Resistant to mechanical shear Low traction number Exceptional resistance to oxidation and scale at high temperatures Exceptional wear protection Water separation Foam control Air separation Applications: Heavy-duty industrial gearboxes Wind turbine gearboxes Mining equipment Steel mills Paper and pulp mills Other applications with high loads and extreme environments Benefits: Increased equipment protection Extended oil life Reduced downtime Improved energy efficiency Reduced wear Improved reliability Increased productivity