Torco RSF Medium Racing Shock Fluid Bottle - 1 liter is a series of light viscosity fluids engineered to exceed the most demanding conditions of modern suspension systems. It is formulated using the most advanced 100 percent synthetic base fluids to provide consistent performance during long duration and severe temperature conditions. The RSF employs Torco's proprietary additive system to maintain high VI and eliminate stiction, friction and wear. It features the best protection against foaming, seal swell, oxidation and corrosion. It is available in light and medium. It is recommended for use in all performance or racing shock applications. It exceeds the manufacturers' performance requirements.