OILS AND OIL COMPOSITIONS ADAPTED TO BE USED ON OR FLOWED OVER METAL DURING THE MILLING, TURNING, CUTTING, THREADING, GRINDING, DRILLING, OR OTHER MACHINING OF THE SAME FOR ABSORBING AND RADIATING OR DISSIPATING THE HEAT GENERATED BY AND DURING THE MACHINING OF METAL AND FOR COOLING THE TOOLS OF SUCH MACHINES AND FOR LUBRICATING HYDRAULIC SYSTEMS, PNEUMATIC TOOLS, AND PNEUMATIC COMPRESSORS