AeroShell Turbine Oil 500 is a 5 mm2/s synthetic hindered ester oil incorporating a carefully selected and balanced combination of additives to improve thermal and oxidation stability and metal passivation.
AeroShell Turbine Oil 500 was developed essentially to meet the requirements of Pratt & Whitney 521 Type II and MIL-L-23699 specifications and is entirely suitable for most civil and military engines requiring this class of lubricant. AeroShell Turbine Oil 500 is approved for use in a wide range of turbine engines as well as the majority of accessories.
AeroShell Turbine Oil 500 contains a synthetic ester oil and should not be used in contact with incompatible seal materials and it also affects some paints and plastics. Refer to the General Notes at the front of this section for further information.
U.S.: Approved MIL-PRF-23699F Grade STD
British: Approved DEF STAN 91-101 Grade OX-27
French: Equivalent DCSEA 299/A
NATO Code: O-156
Joint Service Designatio: OX-27
Pratt & Whitney: Approved 521C Type II
General Electric: Approved D-50 TF 1
Allison: Approved EMS-53 (Obsolete)
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