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SAE ARP5921 : 2014

Evaluation of Coking Propensity of Aviation Lubricants in an Air-Oil Mist Environment using the Vapor Phase Coker

Standard Details

This method is designed to evaluate the coking propensity of synthetic ester-based aviation lubricants under two phase air-oil mist conditions as found in certain parts of a gas turbine engine, for instance, bearing chamber vent lines. Based on the results from round robin data in 2008–2009 from four laboratories, this method is currently intended to provide a comparison between lubricants as a research tool; it is not currently a satisfactory pass/fail test. At this juncture a reference oil may improve reproducibility (precision between laboratories); a formal precision statement will be given when there is satisfactory data and an agreed on, suitable reference oil if applicable.

Cross Reference: AMS5560,AMS5567,ARP5088,ASTMD445,MIL-T-8504

General Information

Status : Issued
Standard Type: Main
Document No: SAE ARP5921 : 2014
Document Year: 2014
Pages: 11

Life Cycle

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SAE ARP5921 : 2014
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