Mobil Aero HF: The Premium Hydraulic Oil for Your Aircraft Mobil Aero HF is a premium quality hydraulic oil that is used in aircraft systems where hydrocarbon-based hydraulic fluids with good fluidity at very low temperatures are required. The oil ensures reliable performance of pumps, servo valves and other hydraulic system components. Features and Benefits: Meets or exceeds the requirements of MIL-PRF-5606 and NATO Code H-515 Excellent low temperature properties Good chemical and oxidation stability Resists the formation of acidic constituents, deposits and varnishes Meets "super clean" requirements of modern hydraulic systems Ensures reliable performance of pumps, servo valves and other hydraulic system components Applications: Mobil Aero HF is recommended for use in a wide variety of aircraft systems, including: Flight control systems Landing gear systems Hydraulic power units Engine controls And more