LiquiVac a user friendly and environmentally safe oil changing system developed for the DIY. It's fast, convenient, and eliminates mess and clean up. Old oil is quickly vacummed from the engine directly through the dipstick tube and stored in the 3 quart tank for proper disposal. Change oil in 3 easy steps. Depressurize tank, insert drain/suction hose down the engine's dipstick tube, release suction hose clamp to begin removal. The LiquiVac also can be used to extract transmission fluid, differential grease, radiator coolant, hydraulic fluid, and even winterize water lines.