Scratch the drain plug and get a TopSider, does it all from the top the same as the dealer does. I've been using a TopSider oil extraction unit for the last 10 years for my cars and boat. They are available from any marine store for
about $39.00. Works great, can do an oil and filter change on the 300SD
in about 20 minutes. Here's 2 links to oil changes on your mercedes
with photos.
http://www.peachparts.com/Wikka/OilFilter1
http://www.peachparts.com/Wikka/OilFilter2

__________________
Doug
'83 300SD "Old Gold" 170,000 mi.
'82 380SL "Green Machine" 190,000 mi.

Some days you're the pigeon, some days you're the statue... I'd rather be the pigeon!