Lube King, 5 Gallon Pail, AW ISO 68, 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, 0.8723 Viscosity @ 40 Degrees Celsius CST, 69.25 Viscosity @ 100 Degrees Celsius CST, 8.95 Pour Point Degrees Celsius, -30 Degrees Celsius, -22 Degrees Fahrenheit, Viscosity Index 103.