AeroShell Landing Gear Fluid (LGF) is a mineral hydraulic fluid (MIL-PRF-5606) with added extreme pressure and lubricity additives. The lubricity agent provides a stable film layer to the metal surfaces at mild operating conditions. When severe conditions exist (landing/touchdown), the extreme pressure additive supplies the load carrying needed at the metal-to-metal surfaces to prevent the occurance of such phenomena as ladder cracking and slip stiction of the piston component of the landing gear. AeroShell LGF is AeroShell Fluid 41 plus additives.