Features
 

Mobil Jet Oil II is formulated to meet the demanding requirements of aircraft-type gas turbines operating over a wide range of severe operating conditions. The product has a high specific heat in order to ensure good heat transfer from oil-cooled engine parts.  In extensive laboratory testing and in-flight performance, Mobil Jet Oil II exhibits excellent bulk oil stability at temperatures up to 204єC (400 єF).  The evaporation rate at these temperatures is low enough to prevent excessive loss of volume.  Key features and benefits include:

Features	Advantages and Potential Benefits
Excellent thermal and oxidation stability	Reduces the formation of carbon and sludge deposits Maintains engine efficiency and extends engine life
Excellent wear and corrosion protection	Extends gear and bearing life Reduces engine maintenance
Retains viscosity and film strength across wide temperature range	Provides effective lubrication at high operating temperatures
Chemically stable	Reduces evaporation losses and lowers oil consumption
Low pour point	Eases start-up in low ambient temperature conditions

Applications 
 

Mobil Jet Oil II is recommended for aircraft gas turbine engines of the turbo-jet, turbo-fan, turbo-prop, and turbo-shaft (helicopter) types in commercial and military service. It is also recommended for aircraft-type gas turbine engines used in industrial or marine applications.

Mobil Jet Oil II is approved against 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 performance characteristics of Mobil Jet Oil II.

Mobil Jet Oil II is compatible with all metals used in gas turbine construction, as well as with F Rubber (Viton A), H Rubber (Buna N), and silicone seal materials.

Specifications and Approvals

Mobil Jet Oil II has the following builder approvals:

Engines

-Honeywell/Lycoming-Turbine engines

-Rolls-Royce/Allison Engine Company

-CFM International

-General Electric Company

-IAE International

-Pratt and Whitney Group

-SNECMA

-Pratt and Whitney, Canada

-Rolls-Royce Limited

-Honeywell/Garrett-Turbine Engine Company

-Turbomeca

Accessories

-Honeywell-Auxiliary power units and air cycle machines

-Hamilton Standard-Starters

-Hamilton Sundstrand corp.- APUs, Constant-speed drives and integrated-drive generators