Synthetic base oil for manual and automatic transmissions with official VOLVO 97307 and VOITH Class B approvals. It is especially recommended for synchromesh or non-synchronized transmissions, operating under very intense conditions of loads, speed and temperature. Specially designed for all gearboxes with or without Intarder, such as ZF gearboxes with integrated retarder and ZF gearboxes (ZF Intarder). Recommended for any application requiring API GL-4 performance level.