Hydraaulic oil

SKYDROL-4-4-25

Early aviation hydraulic systems were used to apply brake pressure. These systems used a vegetable oil-based hydraulic fluid. As aircraft design produced larger and faster aircraft, greater use of hydraulics was necessary. These advances led to development of petroleum-based hydraulic fluids such as Mil-O-3580 and, later, Mil-H-5606. Shortly after World War II, the growing number of aircraft hydraulic fluid fires drew the collective concern of the commercial aviation industry and the public. In 1948, Monsanto Company worked with Douglas Aircraft Company to develop a fire-resistant hydraulic fluid based on phosphate ester chemistry, which was named Skydrol® 7000. As the transport industry moved toward jets, Skydrol® 500A fluid was developed to meet the environmental needs of the new aircraft, and with the continuous development of more advanced aircraft further modifications to Skydrol fluid formulations were made. These changes, required by the aircraft manufacturers, are known as modifications to the fluid specification ... or simply as Type I, II, III and now Type IV fluids.Skydrol® LD-4 and Skydrol® 500B-4 hydraulic fluids are Type IV fluids formulated to e xceed the rigid specifications of the aircraft manufacturers. They have been in commercial usage since 1978 and have demonstrated outstanding performance. In 1997, Solutia Inc. was formed from the chemical businesses of Monsanto. Solutia continues as the world leader in aviation hydraulic fluid service and support.

SKYDROL-5

Early aviation hydraulic systems were used to apply brake pressure. These systems used various oil-based hydraulic fluids. As aircraft designs produced larger and faster aircraft, greater use of hydraulics was necessary. These advances led to the development of petroleum-based hydraulic fluids such as Mil-O-3580 and, later, Mil-H-5606. Shortly after World War II, the growing number of aircraft hydraulic fluid fires drew the collective concern of the commercial aviation industry and the public. In the later 1940s, Douglas Aircraft Company and Solutia Inc. cooperated in the development of a fire resistant hydraulic fluid based on phosphate ester chemistry, which was named Skydrol 7000. As the aviation transport industry moved toward more sophisticated aircraft that operated at more extreme conditions, Skydrol 500A fluid was developed to meet the needs of these new aircraft. Continuous development of more advanced aircraft led to modifications of the Skydrol fluid formulations. The changes required by the aircraft manufacturers are known as modifications to the fluid specifications ... or simply as Type I, II, III, or Type IV fluids. Skydrol LD-4 and Skydrol 500B-4, Solutia’s Type IV fluids, have been in commercial service without modification since 1978. Aircraft design and the transport industry continue to evolve. Newer, more efficient aircraft designs and improved maintenance procedures put greater demands on hydraulic fluid. Solutia has invested over 10 years of effort to develop a new hydraulic fluid to meet these demands. Skydrol 5 sets the standard for the nextgeneration of phosphate ester-based hydraulic fluid. It is a lighter, more thermally stable fluid than any existing Type IV hydraulic fluid. Solutia has over 50 years of experience in providing Skydrol brand phosphate ester-based hydraulic fluid to the commercial air transport industry. We are confident that Skydrol 5 will continue our record of outstanding service to the industry. A Brief History of Skydrol® Aviation Hydraulic Fluid SKYDROL 5’S PATENTED FORMULATION SETS THE STANDARD FOR THE NEXT GENERATION OF PHOSPHATE ESTER-BASED HYDRAULIC FLUID. IT IS A LIGHTER, MORE THERMALLY STABLE FLUID THAN ANY EXISTING TYPE IV HYDRAULIC FLUID.

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