Shell AeroShell Turbine Oil 555 is an advanced 5 mm²/s synthetic ester lubricating oil formulated for aircraft turbine engines and helicopter transmissions, offering exceptional load-carrying capacity, thermal stability, and corrosion resistance.
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Shell AeroShell Turbine Oil 555

AeroShell Turbine Oil 555 is an advanced 5 mm²/s synthetic ester lubricating oil formulated for aircraft turbine engines and helicopter transmissions, offering exceptional load-carrying capacity, thermal stability, and corrosion resistance.

Category:

Shell AeroShell Turbine Oil 555

Synthetic ester turbine oil for high-load and high-temperature aerospace applications

  • Engineered to meet the demands of SST engines, helicopter gearboxes, and modern turbine engines

  • Delivers exceptional thermal stability and oxidation resistance under severe conditions

  • Fully approved to DOD-PRF-85734A and DEF STAN 91-100 specifications

  • Widely approved for helicopter transmission use (e.g. Airbus, Bell, Sikorsky, Leonardo)

  • Compatible with major engine platforms: GE, Honeywell, P&W, Rolls-Royce, Safran

  • Excellent anti-wear properties and metal corrosion control

  • Should not be used with incompatible seals, plastics, or paint types

Global Product Code: 001A0084



Application:

AeroShell Turbine Oil 555 is a synthetic hindered ester-based lubricating oil designed for aircraft turbine engines and helicopter transmissions operating under high load and temperature. It meets rigorous military and aerospace standards, offering enhanced protection in both fixed-wing and rotary-wing applications.

Performance Features & Benefits:

  • High Load Carrying Capacity: Developed for SST engine and helicopter gearbox demands.
  • Thermal & Oxidative Stability: Resists viscosity breakdown and acid formation under prolonged heat exposure.
  • Extensive OEM Approvals: Certified by major engine and helicopter manufacturers worldwide.
  • Multi-Environment Performance: Functions across extreme cold to high-heat operating conditions.

Main Application Areas:

  • Aircraft turbine engines meeting DOD-PRF-85734A, DEF STAN 91-100
  • Helicopter transmission and gearbox lubrication
  • Approved for use in both military and civil turbine engines and APUs

Specifications & Approvals:

  • DOD-PRF-85734A
  • DEF STAN 91-100 (UK)
  • NATO Code: O-160
  • Joint Service Designation: OX-26
  • GE: CT58, CT64, CF700, CT7, CJ series
  • Honeywell: T53, AL5512, ALF502, LF507, TPE331, CTS800
  • Pratt & Whitney: JT series, PW4000
  • Rolls-Royce: LiftFan, Tyne, Gem, Adour, M45H, Olympus, RB199
  • Safran Helicopter Engines: MTR390, RTM322
  • Airbus, Bell, Boeing Vertol, MD Helicopters, MBB, Sikorsky (S-61N), Leonardo—model-specific approval required

Environmental & Safety Information:

  • This product presents minimal health hazards when used properly and with appropriate hygiene.
  • Use gloves when handling used oil; wash skin promptly with soap and water.
  • Dispose of used oil at authorised recycling facilities. Do not release into soil or water.
  • Safety Data Sheet (SDS) available via inquiry

Technical Specifications:

Property Typical Value Method
Oil Type Synthetic ester —
Kinematic Viscosity @100°C 5.2 mm²/s ASTM D445
Kinematic Viscosity @40°C 26.5 mm²/s ASTM D445
Kinematic Viscosity @-40°C 11,000 mm²/s ASTM D2532
Flash Point (COC) 258°C ASTM D92
Pour Point < -60°C ASTM D97
Total Acidity 0.4 mgKOH/g SAE-ARP-5088
Evaporation Loss (6.5h @204°C) 1.5% ASTM D972
Foaming Characteristics Passes ASTM D892
Rubber Swell @70°C (72h) 14% FED-STD 791 M.3604 / M.3433
Rubber Swell @204°C (72h) 14% FED-STD 791 M.3604 / M.3433
Thermal Stability – Metal Weight Change @274°C (96h) Passes FED-STD-791 M.3411
Thermal Stability – Viscosity Change 1.4% FED-STD-791 M.3411
Thermal Stability – Acid Number Change 2.6 mgKOH/g FED-STD-791 M.3411
Corrosion/Oxidation Stability @175°C Passes FED-STD-791 M.5308
Corrosion/Oxidation Stability @204°C Passes FED-STD-791 M.5308
Corrosion/Oxidation Stability @218°C Passes FED-STD-791 M.5308
Ryder Gear Test – Relative Rating Passes FED-STD-791 M.6508
Bearing Rig – Deposit Rating Passes FED-STD-791 M.3410
Bearing Rig – Viscosity Change Passes FED-STD-791 M.3410
Bearing Rig – Acid Number Change Passes FED-STD-791 M.3410
Bearing Rig – Filter Deposits Passes FED-STD-791 M.3410
Sonic Shear Stability 0.3% ASTM D2603
Trace Metal Content Passes ASTM D5185 / D6595
Sediment Passes FED-STD-791 M.3010
Ash Passes FED-STD-791 M.3010

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