Castrol Hyspin™ HVI 46 is an ISO VG 46 high viscosity index (VI) hydraulic oil based on a carefully selected ashless (zinc-free) additive system. Formulated to exceed demanding performance standards, it delivers superior anti-wear protection, exceptional thermal and oxidative stability, and fine filtration performance in severely stressed hydraulic circuits.

Featuring a highly shear-stable additive system, Hyspin HVI 46 maintains its viscosity under mechanical stress and extended temperature ranges. It is ideal for outdoor mobile and marine equipment operating under wide temperature swings, as well as indoor precision machinery requiring minimal viscosity fluctuation.

Key Performance Benefits

• Zinc-Free / Ashless Formulation: Minimizes deposit formation and extends component life while maintaining high environmental compatibility.
• High Viscosity Index (VI > 150): Retains critical oil film thickness and fluid viscosity across continuous hot operations and cold startups.
• Shear Stability: Resists mechanical shearing under high pressures, preventing permanent viscosity loss during extended drain intervals.
• Pump & Component Protection: Excellent anti-wear performance reduces pump wear, minimizing unscheduled maintenance and replacement costs.
• Rapid Demulsification: Excellent hydrolytic stability and quick water separation keep hydraulic systems operating reliably.
• Superior Filterability: Excellent fine filtration characteristics, even when water contamination is present, significantly extending filter life.
• Wide Seal Compatibility: Fully compatible with common elastomeric static and dynamic seals including Nitrile, Silicone, and Fluorinated polymers (Viton).

Industry & OEM Specifications