Where is the oil drain on 1998 BMW 740il?

On a 1998 BMW 740iL, the oil drain plug is located at the bottom of the oil pan, which is situated beneath the engine. To access it, you'll need to lift the vehicle safely and locate the plug at the rear of the oil pan. It is a hex bolt, typically requiring a 17mm socket or wrench to remove. Always ensure to have a drain pan ready to catch the old oil when you remove the plug.