Skydrol™ LD-4 is a proven fire-resistant phosphate ester hydraulic fluid from the trusted Skydrol LD Series, formulated for commercial, business, and military aircraft. Known worldwide for its long service life, stability, and superior corrosion protection, Skydrol LD-4 remains one of the most widely used aviation hydraulic fluids in the industry.

Performance highlights include:

• Fire-resistant phosphate ester formulation, providing exceptional flame suppression and operational safety

• Extended fluid life, with outstanding resistance to oxidation and thermal degradation

• Excellent corrosion and wear protection, helping to extend the service life of pumps, actuators, and valves

• Low-density formulation, improving aircraft efficiency and system responsiveness

• OEM-approved and MIL-SPEC compliant, ensuring compatibility and reliability across aircraft platforms

Packaged in a case of six 1-gallon cans, this size is ideal for aviation MRO facilities, fleet maintenance operations, and repair centers needing manageable, high-quality fluid quantities. Skydrol LD-4 continues to set the standard for performance, reliability, and safety in aircraft hydraulic systems worldwide.