Clean the cooling system with LIQUI MOLY Radiator Cleaner (part no. 3320). Then drain it, flush it thoroughly with water and fill with ready-to-use Coolant Ready Mix RAF 12+. Disposal according to the local regulations. Change interval according to manufacturer's instructions. Coolant Ready Mix RAF 12+ is miscible and compatible with silicate-free radiator antifreeze with quality VW designation G12+ and VW specification TL 774-D/F (Radiator Antifreeze KFS 12+ from LIQUI MOLY) or with radiator antifreeze that contains silicates from the original products in accordance with the VW specification TL 774-C (Radiator Antifreeze KFS 11 and Coolant Ready Mix RAF 11 from LIQUI MOLY).