الجمعية الأمريكية لاختبار المواد
Jointly developed by ASTM International, the National Lubricating Grease Institute (NLGI) and SAE International, standard "“standard classification and specification for automotive service greases”" was first published in 1989 by ASTM International. It categorizes greases suitable for the lubrication of chassis components and wheel bearings of vehicles, based on performance requirements, using codes adopted from the NLGI's "“chassis and wheel bearing service classification system”":