Mobil Avrex S Turbo 256
Mobil Avrex S Turbo 256 is a high-performance synthetic aircraft gas turbine lubricant engineered to meet the demanding requirements of modern aviation engines. Formulated using a highly stable synthetic base fluid combined with a unique additive system, Mobil Avrex S Turbo 256 delivers outstanding thermal and oxidative stability, helping resist oil deterioration and deposit formation in both liquid and vapour phases. This ensures reliable lubrication and long-term performance in high-temperature turbine engine environments.
One of the key advantages of Mobil Avrex S Turbo 256 is its exceptional performance across a wide temperature range. The lubricant is designed to operate effectively between approximately −54°C and 176°C, making it suitable for both extreme cold start conditions and high-temperature engine operation. Its very low pour point below −60°C ensures excellent fluidity during cold starts, particularly in aviation environments where temperatures can fall below −40°C.
Mobil Avrex S Turbo 256 also provides excellent resistance to thermal degradation and oxidation. Aircraft turbine engines operate at high temperatures that can accelerate lubricant breakdown and deposit formation. The advanced formulation helps maintain oil stability, reduce deposits and ensure consistent lubrication performance over extended operating periods. This contributes to improved engine cleanliness and long-term reliability.
Another important benefit of Mobil Avrex S Turbo 256 is its excellent heat transfer capability. The lubricant has a high specific heat, allowing it to efficiently transfer heat away from oil-cooled engine components. This helps maintain optimal operating temperatures within the engine and supports overall engine efficiency and durability.
Mobil Avrex S Turbo 256 also demonstrates low volatility, helping reduce oil consumption at elevated temperatures. Its resistance to foaming ensures stable lubrication performance and consistent oil film formation, even under demanding operating conditions. In addition, the lubricant is compatible with materials commonly used in gas turbine construction, including metals and various elastomers, ensuring reliable system performance.
Mobil Avrex S Turbo 256 is recommended for use in aircraft gas turbine engines in both commercial and military service, particularly where very low start-up temperatures are encountered. It meets U.S. Military Specification MIL-PRF-7808, Grade 3, and is approved for use in equipment requiring low viscosity turbine oils. The product is particularly suited for applications where extreme low temperatures limit the use of higher viscosity lubricants.
Physical characteristics include a kinematic viscosity of approximately 13.3 mm²/s at 40°C and 3.3 mm²/s at 100°C. Mobil Avrex S Turbo 256 has a density of approximately 0.963 at 15°C, a flash point of approximately 224°C and a pour point below −60°C. The oil also demonstrates low evaporation loss of approximately 19.6% at 204°C and a Total Acid Number of approximately 0.03 mg KOH/g, supporting reliable lubrication performance and stability in demanding aviation turbine applications.
