Just got a new to us 05 Sunfire 5 speed manual and gonna be doing first oil change with full synthetic mobil 1 5w 30 and a acdelco filter I couldn't find a good answer on the oil drain plug info. Is the washer built into the drain plug itself or is there a separate crush washer that is changed every time the oil is I will be changing oil every 3k to make sure engine stays nice and happy thanks everyone!