Astro 7341 Manual and Pneumatic Fluid Extractor A large 9L Fluid Extractor used to extract many types of liquids including engine oil, gear oil, coolant fluid, power steering fluid, or brake fluid Manual & Pneumatic Fluid Extractor can be used automatically with standard shop air, or manually when shop air is not available Unit has a new safety design, which automatically shuts off air inlet mechanism when the tank is full of liquid