Mobil Avrex S Turbo 256

Standards & approvals

Specifications

Brand

Mobil (ExxonMobil)

Range

Mobil Avrex

Category

Aviation turbine oils

Manufacturer code

201550101530

Availability

On request

Manufacturer's description

Mobil Avrex S Turbo 256 is a gas turbine lubricant combining a highly stable synthetic base fluid with a unique chemical additive package, giving outstanding thermal and oxidative stability that resists deterioration and deposit formation in both the liquid and vapor phases, together with excellent foam resistance. Its effective operating range is -54°C to 176°C (-65°F to 350°F), with a pour point below -60°C (-75°F) and a high specific heat that ensures good heat transfer from oil-cooled engine parts. Extensive laboratory and in-flight testing has shown excellent bulk oil stability at temperatures up to 176°C, with an evaporation rate low enough to avoid excessive volume loss. The lubricant is recommended for aircraft gas turbine engines in commercial and military service, particularly where start-up temperatures fall below -40°C, and is uniquely suited to applications where extreme low temperatures restrict the use of higher-viscosity engine oils. Mobil Avrex S Turbo 256 is approved against U.S. Military Specification MIL-PRF-7808, Grade 3, and is compatible with other synthetic gas turbine lubricants meeting MIL-PRF-7808 or MIL-PRF-23699, although mixing with other products is not recommended as it would reduce performance. It is compatible with all metals used in gas turbine construction, as well as with F rubber (Viton A), H rubber (Buna N) and FVMQ rubber (fluorosilicone).

Applications

• Recommended for aircraft gas turbine engines in commercial and military service, particularly where start-up temperatures are below -40°C (-40°F).
• Approved against U.S. Military Specification MIL-PRF-7808, Grade 3, and by engine and accessory manufacturers specifying 3-centistoke MIL-PRF-7808 (latest revision) lubricants.
• Compatible with other synthetic gas turbine lubricants meeting MIL-PRF-7808 or MIL-PRF-23699 Specifications; however, mixing with other products is not recommended, as the blend would result in some loss of the performance characteristics of Mobil Avrex S Turbo 256.
• Compatible with all metals used in gas turbine construction, as well as with F rubber (Viton A), H rubber (Buna N) and FVMQ rubber (fluorosilicone).

Performance & benefits

• Uniquely suited for use when extreme low temperatures restrict the use of higher-viscosity engine oils.