ROYCO LGF is mineral oil based hydraulic fluids designed specifically for use in aircraft landing gear systems shock struts and other fluid dampening systems. Modern additive technology for greatly improved lubricity and extreme pressure antiwear performance is used to provide the performance levels required by today's wide body aircraft. ROYCO LGF consists of hydraulic fluid conforming to MIL-H-5606 plus LUBRIZOL 1395 and other additives to improve landing gear performance.