Recently bought a 2004 Mercedes CLK 500 Convertible and didn't want to be laying on the floor draining the engine oil. Bought this fluid extractor and used it to drain the oil through the dip stick tube. Worked great with my air compressor! Don't use too much air pressure or the extractor will start to collapse. There is a small valve on the extractor you can use to adjust the air pressure.
Since the oil filter is changed from above, I was able to do the entire oil change standing in front of the car. Don't need to worry about the drain plug, crush washer, etc. I'll be using this on all my various engines going forward.