Análisis estadístico comparativo de propiedades de aceites lubricantes usados en motores de combustión interna de una planta de generación eléctrica

Abstract

This work presents a comparative statistical study of the physicochemical properties of used lubricating oil samples from internal combustion engines in an electric power generation plant. The analysis is based on laboratory tests performed on 44 samples to determine the statistical significance of differences between oil brands and their relation to usage time. Normality tests, analysis of variance (ANOVA), and Tukey tests are used, revealing significant variations in properties such as viscosity, acid number, and metal content. The results support the hypothesis that lubricant performance depends on both the brand and the operating conditions.