The most important characteristics when choosing a grease, in addition to its consistency, are the viscosity of the base oil, the thickener, and its field of application.
A grease with a specific base oil viscosity will be used depending on the application speeds. Low viscosities provide better heat transfer and good low temperature performance, while high viscosities provide better adhesion and water resistance.
The application temperature range is given by the dropping point, where the grease permeabilizes and starts to leak from the base oil and eventually leaks out of the matrix. Resistance to adverse environmental conditions, also determined by the scope of application, is conferred by the additives added to the grease mixture for anti-corrosion, extreme pressure, water resistance, biodegradability purposes and more.