MOBIL JET 254

MOBIL JET 254 is an advanced synthetic gas turbine lubricant designed for both commercial and military aircraft engines. Formulated with a hindered-ester base stock and a specialized additive package, it offers superior thermal and oxidation stability, preventing degradation and deposit formation. This ensures it meets stringent builder and military specifications for performance and reliability. operates effectively in a wide temperature range from -40 °C (-40 °F) to 232 °C (450 °F), maintaining consistent performance across various flight conditions.

Product Type: Lubricant

Application Area: Commercial Aircraft Gas Turbine Engines, Military Aircraft Gas Turbine Engines, Turbo-Fan Gas Turbine Engines, Turbo-Jet Gas Turbine Engines, Turbo-Prop Gas Turbine Engines, Turbo-Shaft (Helicopter) Gas Turbine Engines

Compatible Substrates & Surfaces: Metal

Features: Chemical Stability, Corrosion Resistant, Deposit Prevention, Excellent Load Carrying Capabilities, Excellent Low Temperature Viscosity Profile, Good Thermal Stability, High Oxidation Stability, High Performance, Low Oil Consumption, Low Pour Point, Low Temperature Fluidity, Wear Resistant

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Identification & Functionality

Base Oil Type
Esters
Product Type
Lubricant
Technologies
Ready-to-Use Products
Product Families
Ready-to-Use Products — Fluids & Lubricants
Lubricants & Oils

Features & Benefits

Ready-to-Use Product Features
Chemical Stability,
Corrosion Resistant,
Deposit Prevention,
Excellent Load Carrying Capabilities,
Excellent Low Temperature Viscosity Profile,
Good Thermal Stability,
High Oxidation Stability,
High Performance,
Low Oil Consumption,
Low Pour Point,
Low Temperature Fluidity,
Wear Resistant

Applications & Uses

Markets
Automotive & Transportation
Applications
Automotive & Transportation — Lubricants & Functional Fluids
Aerospace Fluids & Lubricants,
Marine Fluids & Lubricants
Application Area
Commercial Aircraft Gas Turbine Engines,
Military Aircraft Gas Turbine Engines,
Turbo-Fan Gas Turbine Engines,
Turbo-Jet Gas Turbine Engines,
Turbo-Prop Gas Turbine Engines,
Turbo-Shaft (Helicopter) Gas Turbine Engines
Compatible Substrates & Surfaces
Metal

Properties

Specifications
ValueUnitsTest Method / Conditions
Autoignition Temperature399°C30 CFR 35.20
Change in Kinematic Viscosity (at 40°C, 72 h)-2.2%ASTM D2532
Elastomer Compatibility (72hr at 240°C, % swell)20.8-AMS-3217/1, FTMS 791-3604
Elastomer Compatibility (72hr at 70°C, % swell)20-AMS-3217/1, FTMS 791-3604
Evaporation Loss (at 204°C, 6.5 h)7.4mass %ASTM D972 mod
Evaporation Loss (at 232°C, 5.5" Hg, 6.5 hr)25.2mass %ASTM D972 mod
Fire Point288°CASTM D92
Flash Point254°CASTM D92,Cleveland Open Cup
Foam (Sequence I, Tendency)0mlASTM D892
Foam (Sequence II, Tendency)10mlASTM D892
Foam (Sequence III, Tendency)0mlASTM D892
Kinematic Viscosity (at 100°C)5.3mm²/sASTM D445
Kinematic Viscosity (at 40°C)26.4mm²/sASTM D445
Kinematic Viscosity (at -40°C)11500mm²/sASTM D445
Pour Point-62°CASTM D5950
Shear Stability0.7%KV lossASTM D2603
Specific Gravity (at 60/60°F)1.0044-ASTM D1429
Total Acid Number0.08mg KOH/gARP 5088
Ryder Gear Load Carrying (% vs ref)114-FTMS 791-6508