Just 15 strokes is all it takes to create a vacuum! Premium quality design means fewer pumps resulting in less time spent on a job. Self-priming pump extracts oil and fluids by creating a vacuum in the 1.32 gallon (4.5 liters) unit. Place withdrawal probe in dipstick tube and begin pumping. When unit is filled to capacity internal float shuts off to prevent overfilling container. Pressure relief valve allows handle to return to carrying location for ease of transportation. Pouring spout allows for clean transfer at a proper disposal facility, making recycling easy. Kit includes three sizes of extraction hoses, pump housing and hose fitting that connects to marine oil dipstick tube. Not for use with gasoline!