Hydraulic HDZ oils are an extension of the RANDO Oil HD series incorporating a shear-stable viscosity index improver additive
These grades exhibit all the qualities of the HD series and additionally have "multi-grade" viscosity properties
Provide real and very significant "crossgrading" benefits and stay in grade, even when subjected to the shearing condition of high speed, high pressure hydraulic systems in severe service
Contains rust and oxidation inhibitors and a specially selected anti-foamant that permits the rapid release of entrained air and water