WOCO® AW hydraulic oils are fully inhibited hydraulic oils designed for service in piston, vane or gear pumps operating at pressures over 1000 psi and/or speeds over 1200 rpm. The AW hydraulic series contain anti-wear, rust, oxidation and foam inhibitors, and exhibit excellent water separating characteristics. These oils meet or exceed the requirements of the pump manufacturers that do not prohibit the use of zinc additives.