The Liqui Moly Maintenance Service Kit - 136999 is a comprehensive kit of products designed to help maintain and improve the performance of a car. It includes a variety of essential maintenance items that are necessary for keeping a car in top condition. The kit contains a total of eight items, each serving a specific purpose in maintaining the car. These include an engine oil additive, a fuel system cleaner, a brake cleaner, a radiator cleaner, a power steering fluid, a transmission fluid, a windshield washer fluid, and a spray lubricant. These products are designed to clean, protect, and enhance different systems of the car, such as the engine, fuel system, brakes, and power steering. The kit is suitable for use on all types of cars and can help extend the lifespan of the vehicle while also improving its overall performance.