Using this oil change kit is easy. First, make sure your car engine is cool. Then, find the oil drain plug under your car and place an oil pan beneath it. Remove the drain plug and let the old oil drain out completely. Next, remove the old oil filter. Use some of the new Motul 8100 5w30 X - Clean engine oil to lubricate the rubber gasket of the new K&N oil filter, then install it. Replace the oil drain plug with the new Subaru OEM Oil Drain Plug Gasket. Finally, pour in the new Motul engine oil. Remember to check the oil level using the dipstick after adding the oil. For maintenance, always use genuine parts like those in this kit for your next oil changes. Also, follow your car's manual for the recommended oil change intervals. Keep your kit in a cool, dry place when not in use.