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AeroShell Turbine Oil 390 Synthetic Turbine Engine Oil

AeroShell Turbine Oil 390 Synthetic Turbine Engine Oil

AeroShell Turbine Oil 390 is a 3 mm2/s synthetic diester oil incorporating a carefully selected and balanced combination of additives to improve thermal and oxidation stability and to increase the load carrying ability of the base oil.

AeroShell Turbine Oil 390 was developed primarily as an improved 3 mm2/s oil for British turbo-jet engines. AeroShell Turbine Oil 390 is fully approved for a wide range of turbine engines.

More recently, because of the low temperature characteristics of AeroShell Turbine Oil 390, there is interest in using this oil in auxiliary power units (APU) in order to overcome the effects of cold soak. Normal practice is to shut down the APU during cruise, the APU then experiences cold soak, often prolonged, and when the unit is started there is considerable difficulty resulting in the unit not coming up to speed in the given time, thus causing a hung start.

In such cases where the APU is subject to a long cold soak the viscosity of standard 5 mm2/s oils used in the APU will increase from 5 mm2/s at 100°C to typically 10,000 mm2/s at –40°C. At this much higher viscosity the oil cannot flow easily leading to a large viscous drag within the APU, thereby contributing to the difficulty in starting. AeroShell Turbine Oil 390 on the other hand experiences a much smaller viscosity increase (typically 2000 mm2/s at –40°C) with a reduction in viscous drag which is often sufficient to overcome hung start problems.

All experience to date shows a considerable improvement in cold reliability of the APU when AeroShell Turbine Oil 390 is used.


  • British Specification: Approved DEF STAN 91-94
  • Joint Service Designation Specification: OX-7
  • Russian Specification: Analogue to IPM-10, VNII NP 50-1 4f and 4u, and 36Ku-A
  • Features
    AeroShell Turbine Oil 390 is approved for use in all models of the following engines:
    • Honeywell GTCP 30, 36, 70, 85, 331 and 660 APUs Starters, Turbo compressors

    • Pratt & Whitney Canada PW901A APU

    • Rolls-Royce Conway, Spey, Tay, M45H

    • Turbomeca Artouste III, Bastan, Turmo, AST 950. Approved with restrictions: Ardiden, Arriel, Arrius, Artouste, TM333, AST 600, Astazou, Makila, Marbore 6

    • Hamilton-Sundstrand APS 500, 1000, 2000, 3000

    Oil typeN/ASynthetic ester
    Kinematic viscosity mm2/s
    @ 40°C
    @ 100°C
    @ -54°C

    16.0 max
    4.0 min
    13,000 max

    Cleveland Open Cup °C

    225 min

    Pourpoint °C-60 max-68
    Density @ 15°C kg/lN/A0.924
    Foam characteristicsMust passPasses
    Trace element contentMust passPasses
    CorrosivityMust passPasses
    High temperature oxidative stabilityMust passPasses
    Elastomer compatibility, swell tests
    -nitrile %
    -viton %
    silicone %

    14 to 26
    15 to 25
    16 to 24

    Within range
    Within range
    Within range
    Solid particle contamination
    -sediment mg/l
    -total ash of sediment mg/l

    10 max
    1 max
    100 max

    Load carrying abilityReportPasses
    AeroShell™ Turbine Oil 390 Synthetic Diester Turbine Engine Oil - Quart CanView DetailsEnable JS
    Part Number
    Country of Origin: United States
    AeroShell Turbine Oil 390 Synthetic Diester Turbine Engine Oil - 24 Quart/CaseView DetailsEnable JS
    Part Number
    24 Quart/Case
    Hover for Qty Pricing
    Country of Origin: United States
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