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Mobil Jet Oil II (Single Quart Cans)
Mobil Jet Oil II (Single Quart Cans)
 
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Description
 

Mobil Jet Oil II is a high performance aircraft-type gas turbine lubricant formulated with a combination of a highly stable synthetic base fluid and a unique chemical additive package.  The combination provides outstanding thermal and oxidative stability to resist deterioration and deposit formation in both the liquid and vapour phases, as well as excellent resistance to foaming. The effective operating range of Mobil Jet Oil II is between -40ºC (-40ºF) and 204ºC (400ºF).

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 204C (400 F).  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


Mobil JetOil II
Approved against Mil-PRF-23699


Mobil Jet Oil II

cSt @ 40C (102F)27.6
cSt @ 100C (212F))5.1
cSt @ -40C (40F), % change @ -40C after 72 hours11,000, -0.15
Pour Point, C (F), ASTM D 97-59 (-74)
Flash Point, C (F), ASTM D 92 270 (518)
Fire Point, C (F)285 (545)
Autogenous Ignition Temp, C (F))404 (760)
TAN (mg KOH/g sample)0.03
Density @15C kg/l, ASMT D 40521.0035
Evaporation Loss, % 
6.5 hr @ 204C, 29.5" Hg3.0
6.5 hr @ 232C, 29.5" Hg10.9
6.5 hr @ 232 C, 5.5" Hg (Equals pressure @ 40,000 Ft. altitude)33.7
Foam, ml 
Sequence I, 24 C8
Sequence II, 93.5 C10
Sequence III, 75 C (after 200 F test)8
Foam Stability, after 1 min settling, ml0
Rubber Swell 
F Rubber, 72 hr @ 204C , %15.6
H Rubber, 72 hr @ 70C , %16.4
Sonic Shear Stability, KV @ 40C, change, %0.9
Ryder Gear, Ave. lb/in, % Hercolube A2750, 115

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