The Castrol HyspinTM VG hydraulic oil range is based upon highly refined mineral oil enhanced with rust and oxidation inhibitors. Castrol Hyspin VG has been specially formulated to provide outstanding protection against rust and oxidation while demonstrating good lubricity. Castrol Hyspin VG is also referred to as a ÛR & O” (Rust and Oxidation) hydraulic oil. This range is designed for use in hydraulic systems which do not need anti-wear performance but where a degree of rust and oxidation resistance is desirable. It is also suitable for pumps which contain silver-plated components.