The Liqui Moly Oil Change Kit 5W40 - 137459 is a comprehensive kit designed for changing the oil in a car. It includes three essential components: an oil filter, an oil drain plug, and a bottle of 5W40 motor oil. The oil filter is responsible for removing impurities and contaminants from the oil, ensuring that the engine runs smoothly and efficiently. The oil drain plug is used to drain the old oil from the engine, making room for the new oil. The 5W40 motor oil is a high-quality lubricant that helps to protect the engine and keep it running smoothly. This kit is suitable for various types of cars and is an essential tool for maintaining the health of a vehicle's engine. With this kit, car owners can easily and effectively change their car's oil, ensuring that their vehicle runs at its best.