The Liqui Moly Maintenance Service Kit - 136963 is a comprehensive kit designed to help maintain and improve the performance of a car. It includes several essential products that work together to provide a thorough maintenance service. The kit contains an engine oil additive, a fuel system cleaner, a radiator cleaner, a power steering fluid, a brake fluid, and a transmission fluid. These products are carefully selected to target different areas of the car and ensure optimal functioning. The engine oil additive helps to reduce friction and wear, while the fuel system cleaner removes deposits and improves fuel efficiency. The radiator cleaner helps to remove rust and scale, while the power steering fluid maintains smooth steering. The brake fluid ensures proper braking performance, and the transmission fluid helps to protect and lubricate the transmission. Together, these products provide a complete maintenance service for a car, helping to prolong its lifespan and keep it running smoothly.