Royco 555ROYCO 555 is an advanced 5 centistoke syntheticlubricating oil for gas turbine engines and helicopter transmissions. The product is a blend of hindered polyol esters and a finely balanced modern technology additive package resulting in enhanced load carrying performance, Antiwear, corrosion protection, and excellent thermal - oxidative stability.Properties SpecificationsROYCO 500 meets all the requirements and is qualified under U.S. Military specification: DOD-PRF-85734A
