GB GERION® MBT 75W-90 FS has been developed using the highest quality synthetic base oils and advanced additive systems for manual transmissions in Mercedes Benz Actros vehicles, although it may be used in other OEM’s manual transmissions, when the performance and viscosity grade are applicable. It has been designed to provide fuel economy and extended drain intervals and, although it is miscible and compatible with conventional semi-synthetic and mineral transmission fluids, full performance can only be achieved when it is used unmixed.