The dynamic viscosity of olive oil samples of different storage ages in yearly basis from different locations was measured  as a function of temperature. In this study, the overall results of the effect of dynamic viscosity as a function of storage age  in yearly basis indicate a decrease of dynamic viscosity. This work propose three and multi-constant formulas to obtain  more suitable prediction of temperature dependence of dynamic viscosity of olive oil samples from different locations in  Palestine. The best AAD% was calculated using our proposed formulas to be 0%. The relationships between the viscosity  of olive oil samples with temperature and storage age have been found by fitting equations.