viscosity comparison test of engine oils

Toledo J., Manzaneque T., Ruiz-Díez V., Jiménez-Márquez F., Kucera M., Pfusterschmied G., Wistrela E., Schmid U., Sánchez-Rojas J.L. Feasibility Study on Shear Horizontal Surface Acoustic Wave Sensors for Engine Oil Evaluation. Low Cost Photonic Sensor for In-Line Oil Quality Monitoring: Methodological Development Process towards Uncertainty Mitigation. Lopez P., Mabe J., Miró G., Etxeberria L.

Stabinger viscometer Ubbelohde Capillary viscometer degradation engine oil lubricant properties microchannel viscometer mid-FTIR reliability of results viscosity. The study fills an important gap in empirical research in the context of the reliability of measurement results obtained using various research techniques. Therefore, a very careful approach is suggested when choosing these instruments. It was also found that the results obtained with the use of the mid-FTIR spectrophotometer were burdened with a very large measurement error. Consistent outcomes were obtained for the Stabinger viscometer only, whereas the microchannel viscometer and the mid-FTIR spectrophotometer were not as precise as the reference method.

The main data analysis tools used in the study were multiple regression, Mahala Nobis distance, post-hoc analysis, and the Wilcoxon signed-rank test with the Bonferroni correction. The study material comprised 42 fresh engine oils, all of which are commercially available. The following instruments were selected to measure: a mid-FTIR spectrophotometer, a microchannel viscometer, and a Stabinger viscometer. The aim of this paper is to compare the results of kinematic viscosity of lubricating oils measurements at 40 ☌, obtained with three different rapid evaluation devices, and the standardized method using an Ubbelohde Capillary viscometer.

Viscosity comparison test of engine oils