John Deere Low Viscosity Hy-Gard Transmission and Hydraulic Oil - An exclusive formulation, specifically designed to protect John Deere transmissions, final drives, and hydraulic systems. Low-Viscosity Hy-Gard replaces John Deere All-Weather Hydrostatic Fluid and should be used as a direct replacement for all applications recommending hydrostatic fluid Low-Viscosity Hy-Gard is compatible with hydrostatic fluid and can be added to systems which contain hydrostatic fluid Low-Viscosity Hy-Gard has an ISO 32 Viscosity Grade Low-Viscosity Hy-Gard should be used in all applications calling for JDM J20D Click Here For MSDS Sheets