AeroShell Turbine Oil 308
A 3 mm²/s synthetic ester oil with additives targeted at oxidation and corrosion resistance, and wear reduction. It offers dependability for older engines that require a MIL-PRF-7808 oil.
Specifications & approvals
| Country | Specification |
|---|---|
| United States | MIL-PRF-7808M Grade 3 |
| NATO Code | O-148 |
| Joint Service Designation | OX-9 |
The TDS and MSDS are in English, but you can find these documents for other countries in the Shell EPC area.
Applications
AeroShell Turbine Oil 308 was developed specifically for use in particular models of aircraft prop and turbojet engines for which a MIL-PRF-7808 (formerly MIL-L-7808) oil is required.
AeroShell Turbine Oil 308 contains a synthetic ester oil and should not be used in contact with incompatible seal, and it also affects some paints and plastics.
Health, Safety and Environment
Health and Safety
- This product is unlikely to present any significant health or safety hazard when properly used in the recommended application and good standards of personal hygiene are maintained.
- Avoid contact with skin. Use impervious gloves with used oil. After skin contact, wash immediately with soap and water.
- Guidance on Health and Safety is available on the appropriate Safety Data Sheet, which can be obtained from https://www.epc.shell.com/
Protect the Environment
- Take used oil to an authorised collection point. Do not discharge into drains, soil or water.
Additional information
Advice
- Advice on applications not covered here may be obtained from your Shell representative.
Typical Physical Characteristics
| Properties | Method | MIL-PRF-7808M Grade 3 | Typical |
|---|---|---|---|
| Oil type | - | Synthetic ester | Synthetic ester |
| Kinematic Viscosity @100°C mm²/s | ASTM D445 | 3.0 min | 3.1 |
| Kinematic Viscosity @40°C mm²/s | ASTM D445 | 11.5 min | 12 |
| Kinematic Viscosity @-51°C mm²/s | ASTM D2532 | 13 000 max | 7 600 |
| Flash Point °C | ASTM D92 | 210 min | 225 |
| Total Acidity mgKOH/g | ASTM D664 | 0.40 max | 0.27 |
| Trace metal content | - | Must pass | Passes |
| Foaming tendency | ASTM D892 | Must pass | Passes |
| Evaporation loss (6.5 hrs) @205°C %m | ASTM D972 | 30 max | 28 |
| Corrosion test – Silver @232°C g/m² | FED-STD-791 M.5305 | +/- 4.5 max | 0.01 |
| Corrosion test – Bronze @232°C g/m² | FED-STD-791 M.5305 | +/- 4.5 max | 0.09 |
| Deposition Test WADC – deposit rating | FED-STD-791 M.5003 | 1.5 max | 0.8 |
| Deposition Test WADC – acid number change, % | FED-STD-791 M.5003 | 20 max | 2 |
| Deposition Test WADC – viscosity change @40°C, % | FED-STD-791 M.5003 | 100 max | 12 |
| Elastomer compatibility SAE AMS 3217/1, 168 hrs @70°C, % swell | FED-STD-791 M.3604 | 12 to 35 | 32 |
| Elastomer compatibility SAE AMS 3217/4, 72 hrs @175°C, % swell | FED-STD-791 M.3432 | 2 to 25 | 16 |
| Elastomer compatibility SAE AMS 3217/4, 72 hrs, tensile strength change @175°C, % | FED-STD-791 M.3432 | 50 max | -18 |
| Elastomer compatibility SAE AMS 3217/4, 72 hrs, elongation change @175°C, % | FED-STD-791 M.3432 | 50 max | -16 |
| Elastomer compatibility SAE AMS 3217/4, 72 hrs, hardness change @175°C, % | FED-STD-791 M.3432 | 20 max | -8 |
| Elastomer compatibility SAE AMS 3217/5, 72 hrs @150°C, % swell | FED-STD-791 M.3432 | 2 to 25 | 9 |
| Elastomer compatibility SAE AMS 3217/5, 72 hrs, tensile strength change @150°C, % | FED-STD-791 M.3432 | 50 max | -9 |
| Elastomer compatibility SAE AMS 3217/5, 72 hrs, elongation change @150°C, % | FED-STD-791 M.3432 | 50 max | -27 |
| Elastomer compatibility SAE AMS 3217/5, 72 hrs, hardness change @150°C, % | FED-STD-791 M.3432 | 20 max | -5 |
| Lead Corrosion | FED-STD-791 M.5321 | 9.3 max | 0.2 |
| Corrosion and Oxidation Stability 96h @ 200°C | ASTM D4636 | Must pass | Passes |
| Gravimetric particulate contamination | FED-STD-791 M.3013 | Must pass | Passes |
| Gear load carrying capacity | FED-STD-791 FTM 6508 | Must pass | Passes |
These characteristics are typical of current production. Whilst future production will conform to Shell's specification, variations in these characteristics may occur.
