Assistina Service Oil 500 ml + Cleaning Liquid 1000 mlAssistina Service Oil 500 ml + Cleaning Liquid 1000 ml Service Oil F1 for every application W & H Service Oil F1 is a research product from W & H. Developed hand in hand with modern W & H tool technology. This oil gives you the confidence to know that you are providing W&H vehicles with the best possible care. Your advantages at a glance Excellent lubrication longer life for your vehicles Sterilization resistant Physiologically sound and compatible