You need to remove the oil fill cap, place an oil drain pan under the oil pan drain plug, remove the oil pan drain plug, allow the oil to drain completely, clean and inspect the oil pan drain plug, replace it if necessary and and inspect the oil pan sealing surface, replace the oil pan if necessary. Then you can wipe any remaining oil from the drain plug hole and reinstall the oil pan drain plug until snug, position the drain pan under the
Oil Filter, remove the oil filter and ensure that the oil filter gasket is still on the old filter if not, remove the oil filter gasket from the oil pan.