This is basically a manual vacuum to suck up oil or other liquids from inside your engine or other places where oil or fluids are used. It includes everything you need and works pretty well, although sicking up 4-5 quarts can be a little slow, so be patient. I use it for oil changes so I don't need to always undo the drain plug and replace the compression washer (don't forget to replace the filter too!). I've heard so many horror stories about damage to the threads on the oil pan drain plug from over tightening that I decided to reduce the number of times I go there. That's where this Fluid Evacuator comes in. Warm up the engine a little, turn everything off, slip the straw like hose down the dip stick hole and suck up the oil. Change the filer and refill the oil and you're done. For me that means I don't have to remove panels under the car to access the oil pan drain plug and I don't have to put the car up on stands. Those both take a lot of time, so this evacuator is a great time saver. The tank is big enough to hold the oil from my larger car's engine and when the tank is full, the Mityvac can be put into reverse and pump out the contents too, so you don't need to pour out the tank.It includes several different diameter &#34;straws&#34; that are designed to slip down the dipstick hole or other filler holes (like on a differential). Those straws connect to clear piping so the Evacuator can be standing on the garage floor.Remember that oil and similar liquids flow best when warm. However, don't get the fluids hot and don't run the motor with the straw inserted! I read about someone who did that and the meshing gears pulled the straw into them, causing the motor to stall and needed to take apart the engine to get the straw out!!About my only complaint with the Evacuator is I wish it had more strays since I'd also like to drain the radiators using this but don't want to use the oily motor oil straw where oil isn't wanted in the radiator. Otherwise this is a great tool to have available. Keep in mind that it does require a dip stick hole for  sucking up the oil, so if you have a newer Porsche or similar car with a digital dipstick, you may not be able to use this. Check on forums for you car if you're unsure.