A Comparative Evaluation of New, Used, and Rerefined Lubricating Oils.
Goetzinger-JW; Cotton-FO; Whisman-ML
Oil & Gas J 1975 Mar; 73(9):130-135
Quality-defining bench-scale tests were used to compare and evaluate the quality of eight commercially re-refined lubricating oils, three new lubricating oils, and three re-refined lubricating oils processed in-house from waste crankcase oil drainings by techniques developed by Bartlesville Energy Research Center scientists. Most of the re-refined oils studied could not be distinguished from new oils by the bench tests used to define quality. There was some evidence, however, that one and perhaps more of the re-refined products investigated might not meet all of the quality standards of new lubricating oil, suggesting the need for better quality controls by re-refiners.
Oil & Gas J., V. 73, No. 9, Mar. 3, 1975, PP. 130-135