Accession Number : AD0685886

Title :   SPECTROMETRIC METALS ANALYSIS OF OILS - ARMY GENERAL PURPOSE VEHICLES.

Descriptive Note : Final rept.,

Corporate Author : SOUTHWEST RESEARCH INST SAN ANTONIO TEX ARMY FUELS AND LUBRICANTS RESEARCH LAB

Personal Author(s) : Stavinoha,Leo L. ; Quillian,R. D. , Jr

Report Date : OCT 1968

Pagination or Media Count : 96

Abstract : Wear metals in engine and gear oils were determined spectrometrically at intervals during a 20,000-mile road test of twenty general purpose Army tactical vehicles. Lubricants from several different suppliers were used and supplementary data regarding the physical and chemical properties of the used oils were obtained to permit an evaluation of spectrometric metals analysis as a diagnostic aid to engine and gear maintenance. The results indicate that connecting rod bearing failure due to rapid wear may be predictable. However, correlation of normal wear with metals concentration data could not be established. Engine oil contaminants containing boron, silicon, and sodium were readily detected. Oil additive deterioration and oil sludging were shown, in some cases, to be indicated by barium, calcium, phosphorus, and/or zinc depletions. Wear metals in gear oils were found to be high without significant failures. (Author)

Descriptors :   (*LUBRICANTS, SPECTROSCOPY), (*INTERNAL COMBUSTION ENGINES, FAILURE), CHEMICAL ANALYSIS, SILICON, BORON, SODIUM, COOLANTS, LUBRICANT ADDITIVES, TEST METHODS, CHEMICAL CONTAMINATION, OILS, WEAR RESISTANCE, PREDICTIONS

Subject Categories : Organic Chemistry
      Reciprocating and Rotating Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE