In this study experimental measurements of the thermophysical properties of binary mixtures containing hexane + aromatic hydrocarbon are continued. Here experimental data of the dynamic viscosity, η, at 298.15 K and atmospheric pressure, over the complete composition range are presented. As noted, the second compound of all mixtures belong to the same aromatic family, with a benzene ring having one ethyl chain or two methyl chains placed at different sites of the benzene ring. So, the molar mass for all four second compounds is exactly the same. Thus, these measurements will provide information about the influence of the methyl chain positions on the viscosity when it is mixed with hexane. From the measured values of the dynamic viscosity, dynamic viscosity deviations of the binary mixtures are determined and the viscosity deviations are compared with other deviation results for similar mixtures, and among the different binary mixtures.