AeroShell Turbine Oil 555
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AEROSHELL TURBINE OIL 555
AeroShell Turbine Oil 555 is an advanced 5 mm2/s synthetic hindered ester oil incorporating a finely balanced blend of additives to improve thermal and oxidation stability and to increase the load carrying ability of the base oil.
APPLICATIONS
AeroShell Turbine Oil 555 was specifically developed to meet the high temperatures and load carrying requirements of SST engines and the DEF STAN 91-100 (formerly DERD 2497) and XAS-2354 specifications.
AeroShell Turbine Oil 555 was also designed to give enhanced performance in current engines.
More recently with the need to transmit more power and higher loads through helicopter transmission and gearbox systems (many helicopters use a synthetic turbine engine oil in the transmission/gearbox system) it has become apparent that the use of a very good load carrying oil, such as AeroShell Turbine Oil 555 is necessary. This in turn has led to the development of a U.S. Military Specification, DOD-L-85734, which covers a helicopter transmission oil against which AeroShell Turbine Oil 555 is fully approved.
AeroShell Turbine Oil 555 contains a synthetic ester oil and should not be used in contact with incompatible seal materials and it also affects some paints and plastics. Refer to the General Notes at the front of this section for further information.
SPECIFICATIONS
| U.S. | Approved DOD-L-85734 |
| British | Approved DEF STAN 91-100 Note: both UK and US production are manufactured to the same formulation. |
| French | – |
| Russian | – |
| NATO Code | O-160 |
| Joint Service Designation | OX-26 |
| Pratt & Whitney | Approved 521C Type II |
| General Electric | Approved D-50 TF 1 |
| Allison | Approved EMS-53 (Obsolete) |
EQUIPMENT MANUFACTURER’S APPROVALS
AeroShell Turbine Oil 555 is approved for use in all models of the following engines:
| Honeywell | Auxiliary Power Units GTCP 30, 36, 85, 331, 660 and 700 series |
| General Electric | CT58, CT64, CF700, CJ610 |
| Motorlet | MD601D, E and Z |
| Pratt & Whitney | JT3, JT4, JT8, JT9, JT12, PW4000 |
| Pratt & Whitney Canada | ST6, PW200 |
| Rolls-Royce | Trent, Adour, Gem, Gnome, M45H, Olympus 593, RB199 |
| Turbomeca | Makila |
| IAE | V2500 Series, all marques |
EQUIPMENT MANUFACTURER'S APPROVALS – HELICOPTER
TRANSMISSIONS
AeroShell Turbine Oil 555 is approved for an increasing number of helicopter transmissions, whilst details are listed below, it is important that operators check latest status with the helicopter manufacturer. In all cases it is important to check compatibility with seals used in the transmission/gearbox.
| US Military | Approved for helicopter transmission specification DOD - L -85734 |
| Eurocopter | Approved for Super Puma, for other helicopters check with Eurocopter |
| Agusta | Approved for A109 and A129 models, for other models check with Agusta |
| Bell Helicopter Textron | Approved for all Bell turbine engine powered helicopters |
| Boeing Vertol | Approved for Chinook |
| McDonnell Douglas | Approved |
| MBB | Approved |
| Sikorsky | Approved for S-61N (note other types such as the S-70 and S-76 do not use synthetic turbine oils in the transmission) |
| Westland Helicopters | Approved for some models |
| PROPERTIES | DOD-L-85734 | TYPICAL |
| Oil Type | Synthetic ester |
Synthetic ester |
| Kinematic Viscosity mm 2/s @ 98.9°C @ 37.8°C @ –40°C |
5.0 to 5.5 25.0 min 13000 max |
5.4 29.0 11000 |
| Flashpoint, Cleveland Open Cup °C |
246 min |
>246 |
| Pourpoint °C | –54 max | Below –54 |
| Total Acidity mgKOH/g | 0.5 max | 0.3 |
| Evaporation Loss 6.5 hrs @ 204°C % m |
10.0 max |
2.6 |
| Foaming | Must pass | Passes |
| Swelling of Standard Synthetic Rubber SAE-AMS 3217/1,72 hrs @ 70°C swell % SAE-AMS 3217/4,72 hrs @ 204°C swell % |
0 to 25 0 to 25 |
14 14 |
| Thermal Stability/Corrosivity 96 hrs @ 274°C – metal weight change mg/cm2 – viscosity change @ 37.8°C % – Total Acid Number Change mgKOH/g |
4 max 5 max 6 max |
–0.97 –1.2 2 |
| Corrosion & Oxidation Stability 72 hrs @ 175°C 72 hrs @ 204°C 72 hrs @ 218°C |
Must pass Must pass Must pass |
Passes Passes Passes |
| Ryder Gear Test, Relative Rating Hercolube; A; ; % |
145 |
>145 |
| Bearing Test Rig Type 11⁄2 conditions – Overall deposit demerit rating – viscosity change @ 37.8°C % – Total Acid Number change mgKOH/g – filter deposits g |
80.0 max –5 to +30 2 max 3 max |
22 21 0.83 0.5 |
| Sonic shear stability – viscosity change @ 40°C % |
4 max |
NIL |
| Trace metal content | Must pass | Passes |
| Sediment mg/l | 10 max | Passes |
| Ash mg/l | 1 max | Passes |
AeroShell Turbine Oil 555 is also approved for use in the industrial and marine versions of the Rolls - Royce RB211-22 and Olympus engines,General Electric LM 100, 250, 350, 1500 and 2500 engines.