ASTO 750
A 7.5mm²/s synthetic ester oil that offers excellent load carrying, thermal, and oxidation stability, providing high-standard lubrication for British civil gas turbines, particularly beneficial for turboprop engines.
Specifications & approvals
| Country / OEM | Specification |
|---|---|
| British | DEF STAN 91- 98 |
| French | AIR 3517A |
| Russia | Analogue TU 38.1011722- 85 Grade MN-7.5u |
| NATO Code | O-149 (equivalent O-159) |
| Joint Service Designation | OX-38 |
| Rolls-Royce | OMat 1071 |
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 750 was developed to meet the requirements of DERD 2487 (now DEF STAN 91-98) and to provide a high standard of lubrication in British civil gas turbines, particularly turboprop engines where a good load carrying oil was required for the propeller reduction gearbox.
AeroShell Turbine Oil 750 is also approved by the Russian authorities as an analogue to MN-7.5u and for those Russian turboprop applications which require the use of mixtures of mineral turbine oil and aircraft piston engine oil.
AeroShell Turbine Oil 750 contains a synthetic ester oil and should not be used in contact with incompatible seal materials and it also affects some paints and plastics.
Health, Safety and Environment
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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.
Get in touch with us
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Typical Physical Characteristics
| Properties | Method | DEF STAN 91-98 | Typical |
|---|---|---|---|
| Oil type | – | Synthetic ester | Synthetic ester |
| Density @15°C, kg/m³ | ISO 12185 | Report | 951 |
| Kinematic Viscosity @100°C, mm²/s | ASTM D445 | 7.35 min | 7.65 |
| Kinematic Viscosity @40°C, mm²/s | ASTM D445 | 36.0 max | 32 |
| Kinematic Viscosity @-40°C, mm²/s | ASTM D445 | 13 000 max | 11 531 |
| Pour Point °C | ASTM D97 | -54 max | -60 |
| Flash Point °C | ASTM D92 | 216 min | 249 |
| Total Acidity mgKOH/g | SAE-ARP-5088 | Report | 0.03 |
| Foaming Characteristics Sequences I,II,III Tendency/Stability, ml/ml | ASTM D892 | Must pass | Passes |
| Trace metal content, ppm | ASTM D4951 | Must pass | Passes |
| Elastomer compatibility, % weight change after 24/120 hours – Nitrile | Def Stan 05-50 (Part 61) Method 22 | Must pass | Passes |
| Elastomer compatibility, % weight change after 24/120 hours – Fluorocarbon | Def Stan 05-50 (Part 61) Method 22 | Must pass | Passes |
| Elastomer compatibility, % weight change after 24/120 hours – LCS Fluorocarbon | Def Stan 05-50 (Part 61) Method 22 | Must pass | Passes |
| Elastomer compatibility, % weight change after 24/120 hours Silicone | Def Stan 05-50 (Part 61) Method 22 | Must pass | Passes |
| Solid particle contamination – sediment, mg/l | FED-STD-791 M.3010 | 10 max | <10 |
| Solid particle contamination – total ash of sediment, mg/l | FED-STD-791 M.3010 | 1 max | <1 |
| Corrosivity | Def Stan 05-50 (Part 61) Method 9 | Must pass | Passes |
| High temperature oxidative stability | Def Stan 05-50 (Part 61) Method 9 | Must pass | Passes |
| Load carrying ability | IP 166 | Must pass | Passes |
