I use a manual vacuum device called a Topsider. It is inexpensive as long as you don't get it from a boat store. I first started using it on my boats, but now also use it on my Mercedes, lawn mowers, etc. The oil should be warm and you may need to replace the cheap hoses that come with it. I have seen it for less than $50. I run a small hose down the dip stick tube until I hit the pan, because my dip stick tube does not go all the way to the pan. I set the device on the ground so once the vacuum gets things going a siphon helps things along. It takes awhile so I get it going and then do other things until I hear it sucking air. There are faster devices if you are willing to get into the hundreds of dollars.

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'97 E 300 D