Royco 899 Turbine Oil Keeps High-Performance Aircraft Engines Running Smooth

Gas turbine engines are a true modern marvel. With relatively few moving parts, they produce enormous amounts of power, especially in terms of power-to-weight ratios. In a recent article, we mentioned that the modern CFM-56 used on A320 and B737 passenger jets is 37X more powerful than the most powerful piston engines ever made. 

Not only are they many times more reliable, but they are also much lighter and require far less maintenance. Imagine even attempting to time a 36-cylinder piston engine; pure madness. 

Oil is one key to smooth, efficient, and reliable turbine engine operations. Royco 899 is a common turbine engine oil that protects, offers corrosion protection, and is hydrolytically stable. Let’s take a look at how Royco 899 turbine oil supports high-performance aircraft engines. 

Turbine Oil Properties

Alright, it is time for a rundown on turbine engine oil. Whether for a stationary industrial gas turbine, a turboprop, or a modern high-bypass turbofan, rust and corrosion protection are paramount to the reliability and longevity of industrial gas turbine engines and jet engines alike (and other industrial applications, but more on that later). 

MIL PRF 23699, which we wrote about recently, is the military performance standard that dictates performance characteristics for a certain type of turbine engine oil, in this case, synthetic turbine engine oil with corrosion inhibition properties. The goal was exceptional performance in salt-laden air, ambient tropical environments, and icy polar conditions. 

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MIL-PRF-23699 is for synthetic base lubricating oils for gas turbine engines. These oils are formulated for high thermal and oxidative stability, corrosion inhibition, and compatibility with various engine components. It replaces MIL-L-23699 and has three classifications: Standard (STD), Corrosion Inhibiting (C/I), and High Thermal Stability (HTS).

Key Characteristics

  1. Viscosity

    • 5 centistokes at 100°C for stability under extreme conditions (https://www.silmid.com/knowledge-centre/aerospace-specifications/Mil-PRF-23699/).
    • High viscosity grades like ISO VG 220 are available for better lubrication.
  2. Thermal Stability

    • The operating temperature range is-40°C to 204°C (-40°F to 400°F).
    • For hot-running engines, to prevent oil coking and degradation.
  3. Corrosion Resistance

    • C/I class oils are used for corrosion protection, especially in moist environments or during extended periods of inactivity.
  4. Compatibility
    • It is compatible across all classifications (STD, C/I, HTS), but mixing reduces specialized benefits.
    • Elastomer compatibility testing for minimal swelling and degradation in seals.
  5. Environmental Impact

    • Biodegradable formulations are available for certain classifications.

Military Specifications and Approvals

MIL PRF 23699 dictates the technical specification of synthetic turbine engine oil for military turbine engines that call for this engine type, along with gearbox applications when applicable. Royco 899 is one of the brands that we are authorized to distribute, and we have cases of 24-quart cans available. Or, for operations that use hand pumps for servicing, a 55-gallon drum is also available. 

MIL-PRF-23699 is a U.S. military performance specification for synthetic lubricating oils used primarily in gas turbine (jet) engines, especially those found in military and commercial aircraft123. The oils are designed to provide high thermal and oxidative stability, corrosion resistance, and compatibility with engine materials under extreme operating conditions.

Royco 899 complies wholly with MIL PRF 23699, giving you the peace of mind knowing that your fleet is being serviced with a great oil that conforms to the rigorous lubrication standards of the U.S. military. 

Key Features and Applications

Royco 899 is a great option for most jet and turboprop aircraft that require synthetic jet engine oil. As a synthetic oil, it is well suited to a wide range of temperatures, offering excellent corrosion protection and hydrolytic stability for engines. 

Now, this is only to be used on engines designed for synthetic turbine engine oil, which all modern engines are. 

For legacy engines, which are mostly a military requirement, check out our write-up on mineral oils, specifically MIL PRF 6081. 

Performance and Compliance

Whether you operate in the salt-laden air of the Pacific Rim, the dry, arctic air, or both, synthetic oils excel in corrosion inhibition and provide exceptional performance for a broad range of temperatures and operating conditions. 

Royco 899 complies with MIL PRF 23699, the standard for synthetic turbine engine oil in military use, and is also NATO O-156 compliant.

Greenwood Aerospace Is the Best Source for Royco 899 

Whether you need individual quart-size cans of Royco 899 to service a CFM-56 or you need it by the drum for oil serving carts and other assorted uses, Greenwood Aerospace has you covered. We offer it in 24-packs of 1-quart cans or in bulk 55-gallon drums. We will do everything in our power to offer the best price point, and we know you will get the best customer service. 

For jet engines and other industrial applications, Royco 899 is your top pick when you need MIL PRF 23699-compliant oil. You can also contact us directly at email (contact@governmentprocurement.com) or phone (580) 762-2580. 

Greenwood Aerospace is a U.S. Department of State ITAR-registered company, enabling us to partner with large defense contractors on various military initiatives involving the export of ITAR-controlled items.

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