Every successful flight depends on thousands of precision-engineered components working together under extreme conditions. Inside a turbine engine, bearings rotate at exceptionally high speeds while temperatures can exceed 200°C. At cruising altitude, those same components may also be exposed to temperatures below -50°C.
Protecting these critical components is the job of a highly specialised lubricant.
Unlike automotive engine oils, aircraft turbine oils are engineered to withstand extreme temperatures, resist oxidation, prevent deposits, protect precision bearings, and provide reliable lubrication throughout every phase of flight.
Among the world’s most trusted aviation turbine lubricants is EASTMAN™ Turbo Oil 2380—a synthetic turbine oil that has accumulated more than one billion flight service hours over more than 50 years of successful operation. Its proven track record has made it a preferred choice for airlines, helicopter operators, military fleets, and maintenance organisations worldwide.
EASTMAN Turbo Oil 2380 is a fully synthetic 5 centistoke (5 cSt) aviation turbine engine oil developed for modern gas turbine engines.
It is formulated to meet the demanding requirements of MIL-PRF-23699 and is qualified under SAE AS5780 SPC, making it suitable for a wide range of commercial, military and industrial turbine applications where approved by the equipment manufacturer.
Its combination of proven performance, reliability and long service history has made Turbo Oil 2380 one of the most widely recognised turbine lubricants in the aviation industry.
Product Category
Aircraft Lubricant → Turbine Engine Oil → Synthetic Aviation Oil → 5 cSt Turbine Oil
Military Specification
MIL-PRF-23699
Performance Classification
SAE AS5780 SPC (Standard Performance Capability)
Typical Applications
Key Benefits
Long service life
Aircraft turbine oils are commonly classified by their viscosity, measured in centistokes (cSt). The two most common grades are 3 cSt and 5 cSt.
Modern turbine engines generally use 5 cSt synthetic oils because they provide an excellent balance between low-temperature fluidity and high-temperature protection.
Compared with earlier lubricant technologies, 5 cSt oils offer:
These characteristics have made 5 cSt lubricants the preferred choice for most modern aircraft turbine engines.
Very few aviation products remain in continuous service for over fifty years.
Turbo Oil 2380 has earned its reputation through decades of reliable performance in commercial aviation, helicopter operations, military fleets and industrial gas turbines operating in a wide range of climates.
Its accumulated one billion flight service hours represent more than an impressive statistic—they reflect decades of confidence from airlines, engine manufacturers and maintenance organisations that rely on consistent lubrication performance every day.
High operating temperatures gradually cause lubricants to oxidise, leading to varnish and sludge deposits that can reduce lubrication efficiency and increase maintenance.
Turbo Oil 2380 is formulated to resist oxidation, helping keep internal engine components cleaner and supporting reliable long-term performance.
Modern turbine engines operate continuously under severe thermal conditions.
Turbo Oil 2380 maintains its protective lubricating properties even during prolonged exposure to high temperatures, helping safeguard critical engine components.
Cleaner lubricants contribute to cleaner engines.
By minimising sludge and deposit formation, Turbo Oil 2380 helps reduce maintenance requirements and supports longer component life.
Many aircraft accessories contain copper-based alloys.
Specialised additives help protect these materials against corrosion and chemical attack, improving long-term reliability.
Commercial aircraft routinely cruise in environments where outside temperatures fall below -50°C.
Turbo Oil 2380 remains sufficiently fluid under these conditions, ensuring rapid lubrication during engine start-up and dependable performance throughout flight.
Aircraft bearings rotate at exceptionally high speeds while supporting significant mechanical loads.
Turbo Oil 2380 forms a durable lubricating film that reduces wear, protects gearboxes and contributes to longer component service life.
Its resistance to oxidation, thermal degradation and deposit formation allows the lubricant to maintain consistent performance throughout its recommended service interval, helping operators improve reliability while controlling maintenance costs.
Turbo Oil 2380 is widely used in:
Turbo Oil 2380 is approved or accepted for use in numerous engine and equipment applications associated with:
Several high-quality synthetic turbine oils are available today.
Some of the most recognised products include:
| Brand | Product |
|---|---|
|
Eastman |
Turbo Oil 2380 |
|
ExxonMobil |
Mobil Jet Oil II |
|
Shell |
AeroShell Turbine Oil 500 |
|
NYCO |
Turbonycoil 600 |
|
Royco |
Royco 899 |
Although several high-performance turbine oils are available, each aircraft engine is approved for specific lubricants.
The correct turbine oil should always be selected based on the aircraft or engine manufacturer’s approved maintenance documentation, OEM lubricant list and applicable specifications—not on price or availability alone.
Always consult the applicable Aircraft Maintenance Manual (AMM), Engine Maintenance Manual (EMM) or the latest OEM-approved lubricant documentation before changing or substituting any aviation lubricant.
Selecting an approved aviation lubricant helps achieve:
Choosing the correct lubricant is a small maintenance decision that has a significant impact on engine reliability, safety and long-term operating efficiency.
MIL-PRF-23699 is the U.S. military performance specification for synthetic aircraft turbine engine lubricants. Products meeting this specification satisfy stringent requirements for oxidation resistance, wear protection, thermal stability and low-temperature performance.
SAE AS5780 classifies aviation turbine oils according to their performance capability. SPC (Standard Performance Capability) oils are designed for a broad range of turbine engine applications and meet established industry performance standards.
Yes. Turbo Oil 2380 is widely used in helicopter turbine engines where specified and approved by the engine manufacturer.
Yes. Turbo Oil 2380 is widely used in helicopter turbine engines where specified and approved by the engine manufacturer.
At Favia, we supply genuine aviation lubricants and consumables to airlines, helicopter operators, MRO facilities, defence organisations and industrial customers across the Middle East and beyond.
Our experienced team can assist customers in selecting the correct aviation lubricant based on aircraft type, engine model and OEM approvals, ensuring both technical compliance and dependable supply.
Whether you require routine stock support or fleet-wide procurement, Favia is committed to delivering authentic products, technical expertise and responsive customer service.
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