AeroShell Ascender Turbine Oil - MIL-PRF-23699G Grade HTS / SAE AS5780D Grade HPC 

MFG #: 550042547 (Quart)

MFG #: 550042575 (55GL Drum)

AeroShell Ascender was developed for the latest generation of gas turbine engines as a thermally stable, low-coking, high-elastomer compatibility product. Thanks to its extensive testing for elastomer compatibility – a known service problem – it achieves the optimum balance between anti-coking, thermal stability, and elastomer compatibility; this will ensure reduced coke formation in engines, so any traditional engine problems associated with coke are significantly reduced.

Features:

• Excellent elastomer seal compatibility. You can use AeroShell Ascender and worry less about your seals swelling or degrading prematurely.
• Low coking performance. There’s less chance of oil coke build-up in bearing chambers and service pipes. This means you’ll reduce your maintenance and cleaning costs.
• Improved oxidation and thermal stability. Your oil will last longer during arduous engine conditions.
• Excellent compatibility with other approved oils. Switch from another approved oil to AeroShell Ascender without any concerns and issues.
• A ‘high performance capability’ grade oil. AeroShell Ascender performs better than traditional ‘standard’ grade oils, which can reduce maintenance costs and extend engine life.

Specifications:

• US – Approved SAE AS5780D HPC Grade, Approved MIL-PRF-23699G HTS Grade
  
• British – Equivalent DEF STAN 91-101
• French – Equivalent DCSEA 299/A
• NATO Code – O-154
• Joint Service Designation – Equivalent OX-27
• Viscosity: 5 mm2/s at 100°C (212°F)
• Flash point: 250°C (482°F)
• Pour point: -55°C (-67°F)
• Thermal stability: Excellent
• Oxidation stability: Excellent
• Elastomer compatibility: Superior
• Coking tendency: Low

• All in-stock orders are processed within 1–2 business days (excluding weekends and holidays) after receiving your order confirmation email.
• Orders with a lead time will ship according to the estimated shipping time shown on the product page.
• If we experience a high volume of orders or if an item is backordered, processing times may be slightly delayed. We will notify you promptly via email.

• Returns must be made within a maximum of 3 business days after receiving the product, with prior authorization from Aircraft Shop Supply (Return Material Authorization). Returns without prior notice or written authorization will not be accepted.
• For products with 3 to 6 months of remaining shelf life, claims must be made within the next 2 business days after receipt.
• Returns are not accepted for products with less than 3 months of remaining shelf life.
• Returns are not accepted for products purchased during a low Shelf Life promotion, items sold with discounts, or special orders that must be placed directly with the factory.
• The customer is responsible for the return shipping cost, except in cases where the return is due to an error on the part of Aircraft Shop Supply.
• Refunds will only be issued after the product has been inspected and no damage is found.
• A 25% Restocking Fee will be charged for returns of products in good condition that are either no longer needed or were ordered incorrectly.
• A 35% Restocking Fee will be charged for returns of products with one year or less of remaining shelf life.
• No Restocking Fee will be charged if Aircraft Shop Supply is responsible for incorrectly shipping a product, or if the order is damaged upon leaving the warehouse.
• Hazardous Materials & Dangerous Goods: These items are sold as final and are not eligible for return approval.