PROMAX™ Premium ALL SEASON HYDRAULIC OIL 5W-20 is a very high viscosity index hydraulic oil for use in mobile and industrial equipment operated in a wide range of sub-arctic and temperate climates. This product meets API viscosity 5W-20. ALL SEASONS formulation offers superior shear stability performance. ALL SEASON AW HYDRAULIC OIL 5W-20 is a premium anti-wear hydraulic fluid with outstanding low temperature characteristics. It is specially formulated for use in mobile equipment hydraulic circuits where wide temperature ranges are encountered. (Cherry pickers, bucket trucks and marine hydraulics).