{"product_id":"aeroshell-ascender-turbine-oil","title":"AeroShell Ascender Turbine Oil Synthetic Oil (MIL-PRF-23699 HTS \/ SAE AS5780 HPC)","description":"\u003ch3\u003eHigh Performance Capability (HPC) Synthetic Jet Engine Oil\u003c\/h3\u003e\n\u003cp\u003eAeroShell Ascender is a fourth-generation, 5 mm²\/s (cSt) synthetic hindered ester turbine oil engineered for the latest generation of commercial and military gas turbine engines. Formulated to achieve the ultimate balance between anti-coking performance, high thermal stability, and superior elastomer seal compatibility, AeroShell Ascender effectively eliminates coke formation in bearing chambers while protecting engine seals against premature swelling or degradation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAviation Depot Advantage:\u003c\/strong\u003e Fully qualified to **MIL-PRF-23699 Grade HTS** and **SAE AS5780 Grade HPC** (NATO Code O-154 \/ DEF STAN 91-101), AeroShell Ascender outperforms traditional standard-grade synthetic oils. It features a high flash point of 482°F (250°C), exceptional pour point characteristics down to -67°F (-55°C), and delivers unmatched oxidation defense under severe long-haul thermal stresses.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eManufacturer Part Numbers (MFG #):\u003c\/strong\u003e\u003cbr\u003e• \u003cstrong\u003eQuart Can (1 US Qt):\u003c\/strong\u003e MFG # 550042547\u003cbr\u003e• \u003cstrong\u003e55-Gallon Drum:\u003c\/strong\u003e MFG # 550042575\u003c\/p\u003e\n\u003ch3\u003eKey Characteristics \u0026amp; Performance Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSAE AS5780 HPC \u0026amp; MIL-HTS Approved:\u003c\/strong\u003e Classified under High Performance Capability (HPC) and High Thermal Stability (HTS) standards for modern high-bypass turbofans.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuperior Elastomer Seal Compatibility:\u003c\/strong\u003e Extensively tested to prevent seal degradation, hardening, or premature swelling—a critical solution for long-term engine reliability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-Low Coking Performance:\u003c\/strong\u003e Prevents carbon and varnish build-up in bearing cavities, feed tubes, and scavenge lines, cutting down shop overhaul labor and cleaning costs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnhanced Thermal \u0026amp; Oxidation Stability:\u003c\/strong\u003e Resists chemical breakdown under continuous high-temperature exposure, extending active oil drain intervals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBroad Fluid Interchangeability:\u003c\/strong\u003e Fully compatible with other approved MIL-PRF-23699 synthetic oils, allowing effortless fleet transitions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTypical Aviation Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNext-Generation Commercial Jet Turbofans:\u003c\/strong\u003e Main engine lubricant for high-thrust, high-efficiency commercial airliner engines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMilitary \u0026amp; Defense Aircraft:\u003c\/strong\u003e Deployed across high-performance military gas turbines requiring MIL-PRF-23699 HTS\/HPC qualified synthetic fluids.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHelicopter Turboshaft Engines:\u003c\/strong\u003e Approved for demanding rotorcraft powerplants and gearboxes specifying high-performance synthetic lubricants.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuxiliary Power Units (APUs):\u003c\/strong\u003e Lubricates aircraft APUs, starter-generators, and constant speed drives subjected to extreme thermal cycling.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications \u0026amp; Performance Ratings\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer \/ Product Line\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eShell Aviation \/ AeroShell® Ascender Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUS Military Specification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMIL-PRF-23699G Grade HTS (High Thermal Stability)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSAE Aerospace Standard\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSAE AS5780D Grade HPC (High Performance Capability)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNATO \u0026amp; International Codes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNATO Code O-154 | DEF STAN 91-101 Grade OX-27 | French DCSEA 299\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePhysical Properties\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eViscosity: 5 cSt at 100°C | Flash Point: 482°F (250°C) | Pour Point: -67°F (-55°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePackaging Identifiers\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eQuart: MFG # 550042547 | 55-Gallon Drum: MFG # 550042575\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Aeroshell","offers":[{"title":"Case of 24 QT - FREE GROUND SHIPPING","offer_id":51659603509620,"sku":"ASCENDERQT","price":576.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0888\/2991\/9604\/files\/aeroshell-ascender-turbine-oil-mil-prf-23699-hts-hpc-550042547-quart.png?v=1787757632","url":"https:\/\/145.aero\/products\/aeroshell-ascender-turbine-oil","provider":"Aircraft Shop Supply","version":"1.0","type":"link"}