Enerpac® Hydraulic Oil, Series: HF Series, 55 gal, Drum, Liquid, Blue, Mild Petroleum, 375 deg F Flash, -36.5 deg F Pour, 0.85 lb/gal Specific Gravity, 95 Viscosity Index, Composition: Petroleum Distillate, Hydrotreated Heavy Paraffinic, Zinc Alkyldithiophosphate, Neutral pH