Overview

Mobil Jet Oil 254 is recommended for aircraft gas turbine engines of the turbo-jet, turbo-fan, turbo-prop, and turbo-shaft (helicopter) types used in commercial and military service. It is also suitable for aircraft-type gas turbine engines used in industrial or marine applications.Mobil Jet Oil 254 is approved against the High Thermal Stability (HTS) classification of U.S. Military Specification MIL-PRF-23699. It is also compatible with other synthetic gas turbine lubricants meeting MIL-PRF-23699. However, mixing with other products is not recommended because the blend would result in some loss of the superior performance characteristics of Mobil Jet Oil 254.Mobil Jet Oil 254 is completely compatible with all metals used in gas turbine construction, as well as with F Rubber (Viton A), H Rubber (Buna N), and other commonly used seal materials.

Approvals

Engines

• Honeywell/Lycoming-Turbines
• Rolls-Royce/Allison Engine Company
• CFM International
• General Electric Company
• International Aero Engines
• Pratt and Whitney Group
• Pratt and Whitney, Canada
• Rolls-Royce Limited
• SNECMA
• Honeywell/Garrett Turbine Engine Company

Accessories

• Honeywell-Auxiliary power units and air cycle machines
• Hamilton Standard-Starters
• Hamilton Sundstrand Corp.-APUs, constant-speed drives and integrated-drive generators

Benefits

Reduces bulk oil oxidation by 50 percent

Deposit control increased by 50 Fahrenheit degrees

Reduces sludge and carbon deposit formation

Reduces engine maintenance

Longer seal and bearing life

Lower oil consumption