The Sage Oil Vac Filter Stinger™ is a patented mobile, self-contained fluid exchange system allowing you to perform scheduled maintenance twice as fast without the use of messy pumps. The 3 wheeled cart allows for easy mobility around shops and factories. The 30040 features a 30 gallon used oil tank and a 30 gallon new fluid tank. The barrel straw comes standard to simplify filling the new oil tank. The digital handheld meter on the new oil hose means no more guessing when refilling the engine. The Sage Oil Vac Filter Stinger™ removes all old oil from the filter before it is spun off and placed in the patented Used Filter Receptacle™.