The Liqui Moly Oil Change Kit (5W30) - 137330 is a comprehensive kit designed to provide all the necessary products for a car's oil change. It includes four essential items: an oil filter, engine oil, an oil drain plug, and a drain plug gasket. The oil filter is responsible for removing impurities and contaminants from the engine oil, ensuring that the oil stays clean and effective in lubricating the engine. The engine oil is a high-quality 5W30 oil, suitable for most cars and providing excellent protection and performance. The oil drain plug and drain plug gasket are essential components for safely draining the old oil from the car's engine. This kit is designed to make the oil change process easy and efficient, ensuring that the car's engine stays properly lubricated and protected.