High-performance hydraulic fluid designed specifically for use in seat posts. The O.E.M.-recommended formulation reduces friction, ensuring fast, quiet action with minimal drag. High viscosity index formulation ensures consistent drop and return speeds under all conditions. Proprietary additive system protects seals, minimizes wear and prevents corrosion, improving performance throughout seat post life. For use in all hydraulic seat posts. Formulated to reduce friction and drag. Consistent fast and quiet action. Resists fade to ensure consistent drop and return speeds. Protects components and ensures optimal performance throughout seat post life. O.E.M.-approved and recommended.