Fuel and Lubricant Testing

alcor

phoenix 2

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MIL-PRF-23699F - Synthetic Base Aircraft Turbine Engine Lubricating Oil

We perform lubricants quality testing by military specification MIL-PRF-23699F, which covers gas turbine engine lubricating oils used for aircraft engines. This military specification covers three classes of gas turbine engine lubricating oils, primarily used for aircraft engines, which have a nominal viscosity of 5 centistokes at 100C and which are typically made with neopentyl polyol ester base stocks. All three classes of this oil (Standard (Non-Corrosion Inhibiting) (STD), Corrosion Inhibiting (C/I), and High Thermal Stability (HTS)) are identified by NATO Code No. O-156. 

These lubricating oils are intended for use in turbine engines and gear boxes for air, sea, and ground mobility equipment. These oils are designed for operation within the approximate bulk oil temperature range of -40C to 204C (-40F to 400F). The STD class oil is intended for use in normal performance turbo equipment where concerns about ferrous material (gears and bearings) corrosion induced from extended periods of inoperation in a moist environment is not a concern. The C/I class oil is intended for applications where corrosion inhibition is desired. The HTS class is for use in hot running engine designs where evidence of oil coking and/or degradation is noted. All the lubricant classifications are interchangeable and fully compatible with each other; however, mixing across classifications will diminish the added benefits of the C/I or HTS oils and the mixture will revert to the STD level of performance. 

To read or download this specification, click HERE. We also perform testing according to Specification MIL-PRF-23699G; to learn more about that version of this specification, click HERE. This specification superseded MIL-L-23699.

The following is a list of test methods we perform according to Specification MIL-PRF-23699F. To learn more about one of these tests, click on the test below.