The Liqui Moly Oil Change Kit - 137250 is a comprehensive set of products designed to perform an oil change on a car. It includes three essential items: an oil filter, an engine oil, and an oil drain plug. The oil filter is responsible for removing impurities and contaminants from the engine oil, ensuring that the engine runs smoothly and efficiently. The engine oil is a high-quality lubricant that helps to reduce friction and wear on engine components, prolonging the life of the engine. The oil drain plug is a key component in the oil change process, as it allows for the old oil to be drained out of the engine. This kit is a convenient and cost-effective solution for maintaining the health and performance of a car's engine.