ASTM D4727

ASTM D4727 is a standard developed by ASTM International that outlines methods for evaluating the properties of various types of lubricant base oils. It provides guidelines for testing aspects like viscosity, which measures how thick or thin a liquid is, and other characteristics that affect the performance of oil in engines and machinery. By adhering to this standard, manufacturers ensure their products meet quality and performance criteria, helping consumers make informed choices about lubricants that best suit their needs in automotive or industrial applications.