Mobil Jet Oil II

AIRCRAFT SYNTHETIC OIL

Mobil Jet Oil II is recommended for aircraft gas turbine engines of the turbojet, turbofan, turboprop, and turboshaft (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.


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 Provides effective lubrication at high operating temperatures
  • temperature range
  • Chemically stable Reduces evaporation losses and lowers oil consumption
  • Low pour point Eases start-up in low ambient temperature

Specifications & 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 & Whitney Group
  • SNECMA
  • Pratt & 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

Health & Safety

Based on available information, this product is not expected to produce adverse effects on health when used for the intended application, following the recommendations provided in the Material Safety Data Sheet (MSDS). its intended use. If disposing of used product, take care to protect the environment.

Typical Properties

Viscosity
cSt @ 40oC (102oF) 27.6
cSt @ 100oC (212oF)) 5.1
cSt @ -40oC (40oF), % change @ -40oC after 72 hours 11,000, -0.15
Pour Point, oC (oF), ASTM D 97 -59 (-74)
Flash Point, oC (oF), ASTM D 92 270 (518)
Fire Point, oC (oF) 285 (545)
Autogenous Ignition Temp, oC (oF)) 404 (760)
TAN (mg KOH/g sample) 0.03
Density @15oC kg/l, ASMT D 4052 1.0035
Evaporation Loss, %  
6.5 hr @ 204oC, 29.5" Hg 3.0
6.5 hr @ 232oC, 29.5" Hg 10.9
6.5 hr @ 232 oC, 5.5" Hg (Equals pressure @ 40,000 Ft. altitude) 33.7
Foam, ml  
Sequence I, 24 C 8
Sequence II, 93.5 C 10
Sequence III, 75 C (after 200 F test) 8
Foam Stability, after 1 min settling, ml 0
Rubber Swell  
F Rubber, 72 hr @ 204oC , % 15.6
H Rubber, 72 hr @ 70oC , % 16.4
Sonic Shear Stability, KV @ 40oC, change, % 0.9
Ryder Gear, Ave. lb/in, % Hercolube A 2750, 115