ISO 46 HVI Hydraulic Oils have a similar thickness to SAE 15W at operating temperature. These High Viscosity Index or Multi-Viscosity Hydraulic Fluids are formulated to maintain their ideal viscosity, or thickness, over an extreme range of temperatures. Higher VI number means a wider temperature range.
We carry ISO VG hydraulic fluid from top brands like Chevron, Mobil, Kendall, and Sunoco.