I agree with all the reasonings of doing an oil change from under the car, as it was made to be done. But one thing that has not been addressed yet is the suction created inside the engine. Since I am totally ingnorant of this inane idea of sucking through a dip-stick tube, I have no idea how much suction is created while extracting oil the lazy way. I would be concerned with the suction pulling on seals, etc.

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Don't Chrome them; polish them

The siphon tube is basically a straw. The engine is like a soda can. There is no seal between the siphon tube and the dipstick tube, so the pressures you imply do not exist.

I would not call the method "inane." It is easier, more convenient, and more effective other methods -- except Larry Bible's.

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2008 E350 4matic / Black/Anthracite

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Gone but not Forgotten:
2001 E430 4matic, 206,xxx miles, Black/Charcoal
1995 E320, 252,xxx miles, Black/Grey
1989 260E, 223,00 miles, Black/Black