The Liqui Moly Maintenance Service Kit - 137073 is a comprehensive set of products designed to help maintain and improve the performance of a car. This kit includes various essential items that are necessary for regular maintenance and upkeep of a vehicle. The contents of the kit include an engine oil additive, a fuel system cleaner, a radiator cleaner, a brake cleaner, a rust remover, a windshield washer fluid, and a multi-purpose spray. Each of these products is carefully selected to provide thorough and effective maintenance for a car. The kit is suitable for all types of cars and can help prolong the lifespan of a vehicle while keeping it in top condition.