"Evaluating of oils condition in agricultural machinery is very important. With monitoring and evaluating we can prevent technical and economic losses. In this paper there were monitored the liquid lubricants taken from mobile thresher New Holland CX 860. Chemical and viscosity degradation of the lubricants were evaluated. Temperature dependence dynamic viscosity was observed in the range of temperature from --10 \u00B0C to 80 \u00B0C (for all oils). Considerable temperature dependence dynamic viscosity was found and demonstrated in case of all samples, which is in accordance with theoretical assumptions and literature data. Mathematical models were developed and tested. Temperature dependence dynamic viscosity was modeled using a polynomial 6th degree. The proposed models can be used for prediction of fl ow behavior of oils."@en . "61" . . "RIV/62156489:43210/13:00205522" . . "Oils degradation in agricultural machinery"@en . . "Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis" . "S" . "93551" . . . "43210" . "5" . "CZ - \u010Cesk\u00E1 republika" . . . "RIV/62156489:43210/13:00205522!RIV14-MSM-43210___" . . "Oils degradation in agricultural machinery" . "2"^^ . . . "Oils degradation in agricultural machinery"@en . "viscosity degradation; modeling; chemical degradation; oils"@en . "2"^^ . "1211-8516" . "Kumb\u00E1r, Vojt\u011Bch" . . . . "Dost\u00E1l, Petr" . "Evaluating of oils condition in agricultural machinery is very important. With monitoring and evaluating we can prevent technical and economic losses. In this paper there were monitored the liquid lubricants taken from mobile thresher New Holland CX 860. Chemical and viscosity degradation of the lubricants were evaluated. Temperature dependence dynamic viscosity was observed in the range of temperature from --10 \u00B0C to 80 \u00B0C (for all oils). Considerable temperature dependence dynamic viscosity was found and demonstrated in case of all samples, which is in accordance with theoretical assumptions and literature data. Mathematical models were developed and tested. Temperature dependence dynamic viscosity was modeled using a polynomial 6th degree. The proposed models can be used for prediction of fl ow behavior of oils." . . "7"^^ . . . "Oils degradation in agricultural machinery" . . "[42A685D5FD8F]" .