Skydrol™ LD-4 is a fire-resistant, long-life phosphate ester hydraulic fluid formulated for commercial, business, and military aircraft systems. As one of the most widely used MIL-SPEC aviation hydraulic fluids, Skydrol LD-4 is known for its exceptional thermal stability, corrosion protection, and extended service life, making it a trusted choice across global aviation fleets.

Performance highlights include:

• Phosphate ester fire-resistant formulation, offering superior flame suppression and system safety

• Enhanced thermal and oxidative stability, reducing sludge and varnish buildup for longer fluid life

• Outstanding corrosion and wear protection, extending the service life of hydraulic components

• Low-density design, improving aircraft efficiency and performance

• Meets major OEM and MIL-SPEC requirements, ensuring compatibility and reliability across aircraft platforms

Packaged in a case of (24) 1-quart cans, this size is ideal for aviation maintenance technicians, repair shops, and MRO facilities requiring smaller quantities for top-offs and testing. Skydrol LD-4 provides proven reliability, safety, and performance in modern aircraft hydraulic systems.