Production of Used Engine Oils with Defined Degree of Degradation in a Large-scale Device

Correlation of Artificially Altered Oils with Field Samples

  • Adam Agocs AC2T research GmbH
  • Serhiy Budnyk AC2T research GmbH
  • Charlotte Besser AC2T research GmbH
  • Andjelka Ristic AC2T research GmbH
  • Marcella Frauscher AC2T research GmbH
  • Bettina Ronai AC2T research GmbH
  • Nicole Dörr AC2T research GmbH
Keywords: Internal combustion engine oils, Oil condition monitoring, Wear, Friction, Artificial oil aging


Lubricant degradation by additive depletion, contamination and build-up of degradation products deteriorates lubrication performance. It can be expected that engine oil degradation also has an impact on performance parameters. Engine development tends to higher power density, lower engine oil viscosity to optimize fuel efficiency, which heavily stress engine oils and thus demand increased oil performance. Correlations between engine oil degradation, friction and wear during an engine oil’s lifetime are a valuable asset in engine development towards performance, longevity and cost reduction. Here, physical-chemical and tribological properties of engine oils collected from passenger cars were determined. The results revealed the deterioration of friction (loss of fuel efficiency) and wear (increasing loss of material) depending on mileage. Defined used engine oils were produced by artificial alteration in a large-scale device and showed a very good correlation with the field samples.


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How to Cite
Agocs, A., Budnyk, S., Besser, C., Ristic, A., Frauscher, M., Ronai, B. and Dörr, N. (2020) “Production of Used Engine Oils with Defined Degree of Degradation in a Large-scale Device”, Acta Technica Jaurinensis, 13(2), pp. 131-150. doi: 10.14513/actatechjaur.v13.n2.546.
Acta Technica Jaurinensis