can't find plug to drain oil from the pan? heard somethin bout oil suction machine? but is that an option or mandatory? any help would be nice....

Where are you looking?
Looks like this:
http://catalog.worldpac.com/mercedesshop/sophio/wizard.jsp?partner=mercedesshop&clientid=catalog.mercedesshop&baseurl=http://catalog.peachparts.com/&cookieid=1XC0ZKQX925L0POXIQ&year=1992&make=MB&model=190-E-005&category=A&part=Oil+Drain+Plug

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2007 C 230 Sport.

Remove the four screws that hold on the plastic cover under the engine and remove cover. The drain plug is on the side of the oil pan on the driver's side. I'm a drainer and I always buy a new copper washer for the drain plug when I purchase my MB filter.

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1993 190E 2.3
2001 SLK230
1971 LS5 (454) Corvette Convertible

CJ

Just suck it out of the dipstick hole. Dealers do it all the time. I've bn doing this for years. No fuss no muss....

Ron

- suck it out with what?"

There are other devices, but I use a Topsider. This site (and I'm sure there are others) sells them and parts like gaskets, too: http://www.airpoweramerica.com/

As you can see, it looks like an old-style metal gas can, bright blue, 8-qt. capacity (I think), with a bicycle pump and thin tubing attached. You get the oil warm, you pump 30-40 times to build a vacuum in the can, you slide the thin plastic tubing down the dipstick until it reaches the sump, and undo a clamp on the tubing. The oil flows right into the can. While it's flowing (it takes about 15 minutes), you can change the filter and top off other fluids. The site I linked to also sell parts for it, gaskets, etc.

I pump mine a few more times to make sure I'm getting all the oil out. Then you remove the tubing, pour your oil into the engine (being careful not to overfill), and start up and check for leaks. Then the can seals up with metal caps in place of the pump and tubing, and you can take the whole shebang over to your favorite recycler. You can also use it for other fluids; I drained and refilled my power steering reservoir this spring.

You might be able to find the device at your local boat supply shop, if you have one. Boating people have been using them for years, since (I understand) it's rather difficult to drain a marine engine under normal circumstances.
.

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-- Paul W. (The Benzadmiral)
('03 Buick Park Avenue, charcoal/cream)
Formerly:
'97 C230, smoke silver/parchment; '86 420SEL, anthracite/light grey; '84 280CE (W123), dark blue/palomino