Use specific mineral oil-based hydraulic fluids with good wear resistance, antifoaming (rapid degassing), oxidation resistance, corrosion resistance and lubrication properties. Fluids shall also conform to DIN 51524 and VDMA 24317 standards and pass the 11-stage FZG test ISO 14635-1. For standard models, the fluid temperature should be between -- 10°C and +80°C. The kinematic viscosity range of the flow body to be measured is shown in Table A15.