AeroShell Turbine Oil 560 was developed to withstand the hostile environments of todays high powered, high compression engines in which the older generation of oils can be stressed up to and beyond their thermal limits, as evidenced by oil coking in the high temperature bearing areas. By overcoming the problems associated with using old technology oils in new technology engines, AeroShell Turbine Oil 560:
- maintains a cleaner engine
- provides improved load carrying capacity
- reduces maintenance costs
- prolongs bearing life in both new and existing engines.
In order for military authorities to take advantage of this better performance in military engines the specification MIL-PRF-23699 was re-written to include a "High Thermal Stability" (HTS) grade as well as the Standard (STD) and Corrosion Inhibited (C/I) grades. AeroShell Turbine Oil 560 is fully approved as an HTS oil. With effect from January 1st 2002, AeroShell Turbine Oil 560 has been manufactured with an improved formulation to further enhance its anti-coking performance. AeroShell Turbine Oil 560 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 HTS
- British Equivalent DEF STAN 91-101
- French Equivalent DCSEA 299/A
- Russian Analogue to VNII NP 50-1-4F, B3V, LZ-240, VNII NP 50-1- 4U and 36/Ku-A
- NATO Code O-154
- Joint Service Designation Equivalent OX-27
- Pratt & Whitney Approved 521C Type II
- General Electric Approved D-50 TF1
- Allison Approved EMS-53 (Obsolete)