After cleaning any gunk off the drain plug, reinstall it into the oil pan, torqueing it to 20 ft-lbs, refill your engine oil. Even when pouring in the manufacturer’s recommended five quarts of oil, always double check the level on the dipstick, while parked on level ground. Feel free to take a moment and wipe up the inevitable mess. Don’t worry, we all do it. My first oil change might have needed an extra quart of oil and a roll of rags.