How do you change the oil filter of 1994 Mercedes C220?

The oil filter is a cartridge type filter which is accessed from above the engine, not the bottom as is normal with US cars. There is a black plastic cap about 3" in diameter on the drivers side of the engine, just behind the radiator hose. Unscrew the oid drain plug and drain oil from below. Then from the top side you can unscrew the oil filter cap, pull out the old cartridge, and drop in a new cartridge filter element.