This SAE Recommended Practice is to outline those procedures and practices which govern the use of an oil change system for quick service of construction and industrial machines as defined in SAE J1116. It will allow owners of a variety of machines to standardize on the quick-disconnect coupling system of their choice. This recommended practice deals with sizes, design considerations, and practices related to evacuating and refilling by positive means any oil compartment. This practice may also by applicable to other fluid compartments and is to supplement rather than eliminate the drain plug. (Ref. ISO TC 131/4/N27.)