This specification covers a neopentyl polyol ester fluid (see 8.2) with AS5780 HPC or MIL-PRF-23699 HTS Class performance.
Turbine oil base-stocks formulated for high thermal and oxidative stability tend to be more aggressive toward some fluorocarbon elastomer compounds used in aerospace applications. Reference Oil 300 provides a reference fluid that more closely simulates the performance of today's high performance classification turbine oils. AMS3085, issued in 2007, is now due for revision. The changes made to this document reflect the consensus opinion of SAE E-34 committee and reflect further understanding of the shelf life behavior of this reference oil.