Where is oil plug to change oil in 1998 ml320?

In a 1998 Mercedes-Benz ML320, the oil drain plug is located on the oil pan, which is situated underneath the vehicle. To access it, you'll need to lift the vehicle safely, typically using jack stands. The drain plug is usually a hex or socket type bolt that can be loosened with the appropriate tool to allow the old oil to drain out. Always ensure to replace the plug securely after draining the oil and before adding new oil.