Densities and viscosities of butanone +/- 1-butanol, + 2-methyl-1-propanol, + 2-butanol, or + 2-methyl-2-propanol were measured at several temperatures between 288.15 and 318.15 K. At each temperature, the experimental viscosity data were correlated by means of the McAllister bi-parametric equation and according to the model, the four pairs of activation parameters (Delta H-j(*), Delta S-j(*)) have been calculated. By using our previous thermodynamic measurements (VLE, H-E), we have tested the Wei and Rowley non-parametric model, at T=298.15 K, obtaining average absolute deviations which are comparable to those calculated for the bi-parametric model.