In order to change the oil in your car, you need to first remove the drain plug from the oil pan. You should do this when the car is cold so that you won’t scald yourself with hot oil. Wait for the oil to stop draining out of the pan and then replace the plug. While you are waiting, remove the oil filter from the side of the engine. Drain the filter as well. Replace the filter with a new one but be sure to rub some oil around the lip of it so that you will get a good seal when you put it back on. After you have replaced the filter, add as much oil to the car as your manufacturer suggests but be sure to check the oil level because you may need to add a little more than suggested.