MOTOREX BOXER 4T SAE 5W40 is specially designed for Boxer Water Cooling Engines (e.g. BMW). The specific requirements of water/oil cooling engines are thus optimally met. Tests conducted in collaboration with the preparer BMW AC SCHNITZER guarantees high performance. synthetic Performance (Synthetic Performance)ideal for water-cooling/oil-cooling engines reduces oil consumption for catalyst developed in close collaboration with the preparator BMW AC SCHNITZER