ASAE Publ.; (United States) · 1982 · 11 citations · 0 references
EngineeringChemical EngineeringFood AnalysisOilseed Crop ScienceTribologyEngine LubricationLipid OxidationLubricant AdditivesLubricant PropertiesLubrication EngineeringLubrication SystemsDouble BondsEster DegradationFatty AcidsLubricant ContaminationOil DegradationOil LubricationOxidationOxidation Stability
Lubricating oil deterioration due to contamination by methylester of plant oil is studied in laboratory tests in MacCoull apparatus and, for comparison, bench and mixed-driving tests. Methylester of soybean oil (MESO) is added intentionally to the lubricating oil. Laboratory tests show that the amount of double bonds introduced is significant in increasing viscosity and reducing TBN. Gas-chromatographic analysis of extracted ester shows degradation mainly in fatty acids with conjugated double bonds. Tests in engines, both bench and mixed-driving, gave results similar to MacCoull but respectively and much less pronounced.