Applied Thermal Fluids

Mobil Jet Oil 387

$ 34.95

SKU: MOBILJET387QT Category: Mobil Jet Oil Tag: Mobil Jet Oil 387


Mobil Jet Oil 387

Introducing Mobil Jet Oil 387….striking the perfect balance to deliver unsurpassed performance.

Mobil Jet Oil 387 is the most advanced jet engine oil we have ever developed—specifically designed for today’s and tomorrow’s engine technologies. Formulated to deliver exceptional elastomer compatibility, superior thermal and oxidation stability and advanced deposit control—a balance that has never before been achieved with a turbine oil.

ExxonMobil’s relentless pursuit of innovation and technology leadership is demonstrated in this next-generation, High Performance Capability (HPC) engine oil. Proactively developed to respond to the evolving needs of our customers and the industry, Mobil Jet Oil 387 is raising the bar in jet engine lubrication.  After more than a decade of extensive testing, conducted in partnership with leading engine manufacturers and major commercial airlines—under conditions significantly more demanding than normal aircraft service, Mobil Jet Oil 387 is ready for use on an array of engines.  Mobil Jet Oil 387 has been approved for use with many engine manufacturers for a wide range of engine models and components.

At the heart of its formulation, Mobil Jet Oil 387 features a package of custom-made esters and internally developed special additives, specifically designed to provide advanced engine protection and optimize engine performance.As Susan Ardito, ExxonMobil Aviation Products Deployment Manager, said, “We have the ability at ExxonMobil to design the molecules ourselves to create a tailor-made solution to the problems the aviation industry faces. We design the molecules to do what we want, and that gives us an advantage”.

Mobil Jet Oil 387 hits the sweet spot of performance to help keep your aircraft in flight by:

  • Optimizing engine performance:  Advanced deposit control helps reduce leakage, resulting in cleaner running engines and optimal engine performance versus older generation of products.
  • Extending component life:  Exceptional elastomer compatibility helps extends the life of your components, potentially resulting in significant cost savings
  • Minimizing unscheduled maintenance: Helping to improve operational efficiencies, which can reduce maintenance costs

Mobil Jet Oil 387 Performance

Designed to strike the perfect balance, Mobil Jet Oil 387 is everything a high performance oil should be.

To learn more, download the mobil-jet-oil-387-factsheet >>

Features and Benefit of Mobil Jet Oil 387

Mobil Jet Oil 387 shows excellent performance controlling deposits typically experienced in both the liquid and vapor phases in bearing compartments, oil supply lines, and breather/scavenger lines. These properties have been confirmed in various laboratory tests, including the Corrosion-Oxidation Stability Test, Alcor Deposition Test, Vapor Phase Coker, Erdco High-Temperature Bearing Test, Ryder Gear, and the Mobil Thin Film Oxidation Test.

The closely controlled viscosity of Mobil Jet Oil 387 at -40°C (-40°F), and a pour point below -54°C (-65°F), ensure the good low-temperature fluidity which permits starting and lubrication at temperatures as low as -40°C. In extensive laboratory testing, Mobil Jet Oil 387 exhibits excellent bulk oil stability at temperatures greater than 225°C (437°F).

Key features and benefits include:

Features Advantages and Potential Benefits
Long-duration fluorocarbon compatibility Helps avoid premature or unscheduled engine repairs. Helps prevent leaks that can lead to air craft delays and cancellations.
Outstanding oil life characteristics, such as bulk oil stability, viscosity and TAN control Helps minimize formation of sludge and carbon deposits which allows better engine efficiency and reduced engine repair costs as well potentially achieving longer oil drain intervals (in certain applications such as marine and land based turbines), effective lubrication at high operating temperatures
Very low vapor/mist and thin film deposition resistance Helps control deposits in air vent tubes, bearingcompartments, and scavenge oil lines which will all result in reduced engine maintenance costs
Good low temperature fluidity Permits start-up and ensures effective lubrication of critical components (such as APUs in ETOPS applications) at temperatures as low as -40 °F

 Mobil Jet Oil 387 Specs

Mobil Jet Oil 387 is approved against the new SAE AS5780 High Performance Capability (HPC) standard. This civil specification was developed to meet the growing performance and quality needs that commercial airlines seek, especially with the entrance of new, higher-output and lower consumption engines.

Mobil Jet Oil 387 is approved against MIL-PRF-23699-HTS.

OEM in-house evaluation/approval programs are also underway. Once complete, Mobil Jet Oil 387 will be commercialized for use in aircraft gas turbine engines, including turbo-jet, turbo-fan, turbo-prop, and turbo-shaft (helicopter), in commercial and military service. In addition, it will be suitable for aircraft-type gas turbine engines in industrial and marine applications.

Mobil Jet Oil 387 is compatible with other synthetic gas turbine lubricants meeting U.S. Military Specification MIL-PRF-23699. Mixing with other products, however, could result in some loss of its superior performance features. The lubricant 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. Engine/OEM Evaluations


  • Rolls Royce
  • CFM International
  • General Electric Company
  • International Aero Engines
  • Pratt and Whitney Group
  • Rolls-Royce Limited
  • Honeywell

Accessory Approvals Underway

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

Mobil Jet Oil 387 Technical Details

Typical Properties*

 Mobil Jet Oil 387  Typical  Limit
 cSt at 100°C (212°F)  5.2  4.9 to 5.4
 cSt at 40°C (102°F)  25.9  23.0 min
 cSt at -40°C (-40°F)  10140  13,000 max
 0.1 % change at -40°C after 72 hr.  0.1  6%max
 Flash Point, ° C ( ° F), min  278(532)  246 min.
 Fire Point, ° C ( ° F)  292(558)  No limit
 Autogenous Ignition Temp, ° C ( ° F)  405(761)  No limit
 Pour Point, ° C( °F)  -57 (-71)  -54 max
 Specific Gravity, 15/15°C (60/60°F)  0.999  No limit
 TAN (mg KOH/g sample)  0.03  1.0 max
 Evaporation Loss, %
 6.5 hr at 204°C (400°F), 29.5″ Hg  4  10 max
 Foam, ml
 Sequence 1, 24°C (75°F)  10  25 max
 Sequence 2, 93.5°C (200°F)  10  25 max
 Sequence 3, 75°C (after 200°F test)  10  25 max
 Foam Stability, after 1 min settling, ml  0  0 max
 Rubber Swell
 F Rubber, 72 hr at 204°C (400°F), %  15  5 -25
 H Rubber, 72 hr at 70°C (158°F), %  15  5 -25
 Ryder Gear  2806  No limit
 % Hercolube A  104  102 min.

*Typical properties are typical of those obtained with normal production tolerance and may vary slightly, while remaining within specified limits.

Additional information

Weight 1 lbs


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