METRIC
MIL-PRF-23699G
13 March 2014
SUPERSEDING
MIL-PRF-23699F
21 May 1997
PERFORMANCE SPECIFICATION
LUBRICATING OIL, AIRCRAFT TURBINE ENGINE,
SYNTHETIC BASE, NATO CODE NUMBERS: O-152, O-154, O-156, and O-167
This specification is approved for use by all Departments and Agencies of the Department of
Defense.
1. SCOPE
1.1 Scope. This specification covers four classes of gas turbine engine lubricating oils,
primarily used for aircraft engines, which have a nominal viscosity of 5 centistokes at 100 °C
and which are typically made with neopentyl polyol ester base stocks. This oil is identified by
NATO Code Numbers O-152, O-154, O-156, and O-167.
1.2 Classification. The lubricating oil is furnished in the following classes as specified:
Class
Type of Oil
NATO Code
C/I
Corrosion Inhibiting
O-152
HTS
High Thermal Stability
O-154
STD
Standard (Non-Corrosion Inhibiting)
O-156
EE
Enhanced Ester
O-167
Comments, suggestions, or questions on this document should be addressed to: Commander,
Naval Air Warfare Center Aircraft Division, Code 4L8000B120-3, Highway 547, Lakehurst, NJ
08733-5100 or emailed to michael.sikora@navy.mil. Since contact information can change, you
may want to verify the currency of this address information using the ASSIST Online database at
AMSC N/A
FSC 9150
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