The Enerpac HF-series Hydraulic Oil is specially formulated for powered hydraulic pumps. The HF-series oil contains anti-sludge, anti-rust, and anti-foam additives for overall superior performance. The HF-series hydraulic oil prevents cavitation and offers maximum volumetric efficiency and maximum heat transfer. The HF-series oil is not for use in hand pumps. Use the Enerpac LX-Series Oil for hand powered pumps. Offered in 1 quart, 1 gallon, 5 gallon and 55-gallon sizes. The HF-series hydraulic oil has a viscosity index of 100 min.