The density, viscosity, and refractive index data of binary mixtures for the main components of biodiesel (ethyl caprylate, ethyl caprate, and ethyl myristate) with ethylcyclohexane in the whole range of composition were measured at T = (293.15-323.15) K. The excess molar volumes (V,E,',) and viscosity deviations (j) were calculated based on the measured data and correlated with the Redlich Kister equation. The standard deviations, average percentage deviation, and regression coefficients are given. Positive values of VrEn and negative values of A/7 were observed in all the tested binary systems over the entire range of composition.