Abstract
Analytical methods for determining composition of new and used synthetic lubricants have been developed as an important part of the Army's lubrication research effort. A logical approach for the systematic analysis of lubricants has been applied to a wide variety of selected military and commercial lubricants. Hybrid lubricant blends of synthetic hydrocarbons, esters, and mineral oils have been separated and analyzed through the combined use of spectroscopy and chromatography. Ester fractions have been further evaluated by chemical hydrolysis and derivatization to determine exact composition of the parent acidic and alcoholic components. While characterization of lubricants to include more detailed additive composition is not yet complete, expanded analytical approaches to provide compositional information for improved base stock definition have been enhanced. Presented at the 32nd Annual Meeting in Montreal, Quebec, Canada, May 9–12, 1977
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