Mobil Jet Oil 387
Mobil Jet Oil 387 is an advanced synthetic aircraft gas turbine lubricant formulated from high-quality ester base stocks and a specialised additive system. It is designed to meet the performance requirements of current and next-generation gas turbine engines used in both commercial and military aviation.
One of the key advantages of Mobil Jet Oil 387 is its outstanding thermal and oxidation stability. The formulation resists deterioration at elevated temperatures, helping minimise the formation of sludge and carbon deposits. This contributes to improved engine cleanliness, enhanced efficiency and reduced maintenance costs.
Mobil Jet Oil 387 also provides excellent deposit control in both liquid and vapour phases. It helps prevent deposit build-up in bearing compartments, oil lines and vent systems, ensuring reliable engine operation and reducing the risk of performance issues over time.
Another important benefit is its strong oil life performance. The lubricant maintains viscosity stability and low acid formation over extended service periods, supporting longer drain intervals and improved operational efficiency in demanding environments.
Mobil Jet Oil 387 also offers excellent low-temperature fluidity. Its controlled viscosity and low pour point allow reliable start-up and lubrication at temperatures as low as −40°C, making it suitable for a wide range of operating conditions including long-haul and cold climate operations.
Mobil Jet Oil 387 meets key industry specifications including SAE AS5780 High Performance Capability (HPC) and MIL-PRF-23699 HTS, and is approved or under evaluation by major OEMs including General Electric, Rolls-Royce and Pratt & Whitney. It is suitable for use in turbojet, turbofan, turboprop and turboshaft engines, as well as industrial and marine gas turbine applications.
Physical characteristics include a kinematic viscosity of approximately 25.9 mm²/s at 40°C and 5.2 mm²/s at 100°C, with excellent low-temperature fluidity of approximately 10,140 mm²/s at −40°C. The product has a flash point of approximately 278°C, a fire point of approximately 292°C and a pour point of approximately −57°C. It also features a specific gravity of approximately 0.999 and a low total acid number of approximately 0.03 mg KOH/g, supporting reliable performance in high-temperature aviation environments.
