Typical Physical Characteristics

Properties

 

 

 

DEF STAN 91-98

    Typical

 

 

 

 

 

 

 

Oil type

 

 

Synthetic

Synthetic

 

 

 

 

ester

Ester

 

 

 

 

 

 

 

Density @ 15°C

kg/l

 

Report

0.947

 

 

 

 

 

 

 

Kinematic viscosity mm2/s

 

 

 

 

 

@ 40°C

 

 

36.0 max

32

 

@ 100°C

 

 

7.35 min

7.47

 

@ 40°C

 

 

13000 max

10140

 

@ 40°C after storage @ –54°C

 

 

 

 

for 12 hr

 

 

10800

 

Flashpoint Cleveland

 

 

 

 

 

Open Cup

°C

216 min

242

 

Pourpoint

°C

54 max

Below 54

 

 

 

 

 

 

 

Total Acidity

mgKOH/g

Report

0.03

 

 

 

 

 

 

Foaming characteristics

 

Must pass

Passes

 

 

 

 

 

 

 

Sediment

 

mg/l

10 max

Less than 10

 

Total ash of sediment

 

mg/l

1 max

Less than 1

 

 

 

 

 

 

 

Trace element content

 

 

Must pass

Passes

 

 

 

 

 

 

 

 

 

 

Elastomer swell tests

 

 

Must pass

Passes

 

 

 

 

 

 

 

Corrosivity, metal weight change

Must pass

Passes

 
 

 

 

 

 

 

 

Gear Machine Rating

 

 

Must pass

Passes

 

 

 

 

 

 

 

Shear Stability

 

 

 

 

 

– viscosity change @ 40°C

%

2 max

Less than 2

 

– condition of oil

 

 

Must pass

Passes

 

 

 

 

 

Compatibility and miscibility

Must pass

Passes

 

 

 

 

 

 

 

Homogeneity

 

 

 

 

 

@ 210°C

 

 

Must pass

Passes

 

@ –40°C

 

 

Must pass

Passes

 

 

Specifications

U.S.

British

Approved DEF STAN 91- 98 (replaces

 

DERD 2487)

 

 

French

Equivalent AIR 3517

 

 

Russian

Analogue to TU 38.1011722- 85

 

Grade MN -7.5u

 

 

NATO Code

O -149 (equivalent O -159)

 

 

Joint Service Designation

OX – 38

 

 

Equipment Manufacturer’s Approval

Honeywell

 

Auxiliary Power Units (some models)

Pratt & Whitney Canada

 

PT6 (some models)

 

 

 

 

 

Rolls-Royce

 

 

Dart, Tyne, Avon (some early models

 

 

 

only), Gnome, Pegasus, Palouste,

 

 

 

 

 

 

Nimbus, Proteus, Orpheus,

 

 

 

Olympus 200 and 300

 

 

 

 

 

 

Sikorsky

 

 

S-61N transmissions

 

 

 

 

 

 

 

 

 

Soloviev

 

 

D30 engine

 

 

 

 

 

 

 

 

 

 

Turbomeca

 

 

Astazou, Bastan, Turmo, Artouste, Arriel, Malika

AeroShell Turbine Oil 750 is a 71?2 mm2/s synthetic mixed ester oil containing a thickener and additives which provide excellent load carrying, thermal and oxidation stability.

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