Royco 782ROYCO 782 is a red - colored Super Clean, synthetic hydraulic fluid developed to meet the severe duty demands of todays military and industrial equipment. Modern additive technology is employed for oxidative stability, corrosion inhibition, and antiwear protection. ROYCO 782 is compatible with petroleum-based fluids and all components used in mineral oil type hydraulic systems. Properties SpecificationsROYCO 782 meets the requirements of and is qualified to MIL-SPEC: MIL-PRF-83282D Am 1, NATO Code Number H-537.