<p>This project aims to study the rheological and viscoelastic properties of lubricating greases, a technology used to prevent corrosion and characterized by their ability to withstand high temperatures. Three types of lubricating greases were tested using an Anton PAAR Rheometer at 60&#xa0;°C compared to 20&#xa0;°C, to demonstrate the effect of high temperatures on the viscosity decrease. The tests results of shear stress and viscosity versus shear rate were used to analyze the rheological property. Regarding the theoretical analysis, various rheological models were selected, such as the Bingham model, Herschel–Bulkley model, Casson model, power law to evaluate the flow curve data. The behavior of the greases was best expressed using the Casson and Herschel–Bulkley models. The results showed that the linear viscoelastic (LVE) range of the lubricating greases is characterized by steady flow. The experimental results show a curve of storage and loss modulus (G' and G") versus the frequency of oscillatory deformation. It was observed that the samples exhibit G' greater than G" (G' &gt; G"); that is, the elastic behavior is greater than the viscous behavior. This variation is measured in the oscillatory deformation range, which depends on a phase angle of less than 45 degrees. In fact, the development of the rheological properties of lubricating greases depends on the homogeneity between the nature of the oils and the thickeners. Analyses can provide information that can assess the suitability of lubricants in mechanical fields, depending on operating conditions, including temperature.</p> Graphical Abstract <p></p>