The Femco Drain Solutions OES is a fully contained mobile cart system that can be taken to equipment, connected directly to the installed Femco drain plug, and vacuum used oil from the engine, in an enclosed, mess-free process. Once used oil is contained in the OES, the cart can be easily moved to a larger used oil disposal tank. Femco Drain Solutions offers 4 different OES models ranging from 30-gal tanks to 120-gal tanks for used product and one that has the capability of a handling new and used product.