How do you change engine oil on a Mercedes C270 CDI?

To change the engine oil on a Mercedes C270 CDI, start by warming up the engine slightly to thin the oil for easier drainage, then turn it off and allow it to cool slightly. Place a drain pan under the oil pan, remove the oil drain plug, and let the old oil drain completely. Replace the oil filter using an appropriate tool, ensuring to lubricate the new filter’s gasket with fresh oil before installation. Finally, reinstall the drain plug, add new engine oil through the oil filler cap, and check the level with the dipstick to ensure it's within the recommended range.