Lube King, 5 gallon pail, AW ISO 46, hydraulic fluid, exceptional protection against wear from contaminants & higher operating temperatures & pressures ensures longer equipment life, maintains viscosity, even under higher operating temperatures, & has sufficient reserve of key additives, resulting in longer fluid life & reduced operating costs & reduced foaming ensures smooth, efficient operation & proper lubrication of all parts in the system, specific gravity @ 60 degrees Fahrenheit, 15.6 degrees Celsius, 0.8683 viscosity @ 40 degrees Celsius, cst, 46.03 viscosity @ 100 degrees Celsius, cst 6.95 pour point degrees Celsius, -33 degrees Celsius, -28 degrees Fahrenheit, viscosity index 105.