Pentosin FFL-4 is a special fully synthetic transmission fluid, which has been exclusively developed for the application in the new double clutch transmission (DCT) designed by GETRAG. This transmission is a highly developed, complex high tech aggregate which puts extremely demanding requirements onto the transmission fluid. Pentosin FFL-4 has been completely newly developed to satisfy the high demand and was adjusted together with GETRAG to comply with the various challenging specific DCT–performance requirements. In order to ensure perfect DCT-operation it should therefore by all means be avoided that Pentosin FFL-4 is being mixed with any other transmission fluid during service.