Oil Boy works great, and is the same unit sold by Griot's. It appears to be quite heat resistant, as my oil during the last change was hot enough to flow like water and did not melt any of the Oil Boy's plastic.

The only negative is that it holds only about 6 quarts, which is not a real problem. When it gets full, empty it into an empty 5-quart oil bottle and then resume pumping from the engine. When all engine oil is extracted, pour in fresh oil from a new 5-qt bottle, and use that now-empty bottle for the remaining oil in the Oil Boy. (Then take both bottles to your local Auto Store and empty them.)

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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