Acta Univ. Agric. Silvic. Mendelianae Brun. 2013, 61, 691-697
Published online 2013-05-23

Oil additive and its effect

Vojtěch Kumbár, Petr Dostál

Department of technology and Automobile Transport, Mendel University in Brno, 613 00 Brno, Czech Republic

The aim of this paper are experimental approaches, selected for analysis of the engine oils and described above, are surely sufficient for the needs of presented research. The spectrometry was used for determination of presence of selected chemical elements and especially metals in oil. Particles monitoring was employed in order to describe the amount, type, and size of friction particles. The temperature dependence of dynamic viscosity was evaluated by use of rotary viscometer. In case of all three approaches it is advantageous to compare the measured values with the results received for unused engine oil of the same marking and viscosity index. If the degradation of oil is classified as low or medium, it is possible to increase its service life for several thousands of kilometers. Mathematical model (polynomial 6th degree) it was used for fitting experimental values.


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