IHS ESDU Introductory memorandum on the viscosity of liquids and the classification of lubricating oils. 68036

The main aims of ESDU 68036 are (i) to present the factors required to convert viscosity data obtained from the literature into common working units; (ii) to discuss the effects of temperature and pressure on viscosity and to indicate how approximate values of viscosity may be estimated, particularly in the absence of direct data; (iii) to indicate major sources of numerical data on viscosity; (iv) to give information on a number of commonly used classification systems for lubricating oils, based on viscosity and the effect of temperature on viscosity.