How do you change the oil in a 91 Plymouth Acclaim?

To change the oil in a 1991 Plymouth Acclaim, start by warming up the engine slightly to thin the oil, then turn it off and let it cool. Place a drain pan under the oil pan, remove the drain plug with a wrench, and let the old oil drain completely. Replace the drain plug, then remove the old oil filter using an oil filter wrench, and install the new filter. Finally, fill the engine with the appropriate type and amount of new oil through the oil filler cap.