PENTOSIN FFL-2 is the only approved First Fill and Service Fill transmission fluid for the new generation of AVW double clutch gear transmissions (DSG). PENTOSIN FFL-2 is founded on a fully synthetic base oil technology for safe operation at even the highest thermal Load. FFL-2 features a special clutch friction performance which makes it mandatory to be applied solely to the double clutch gear box — do not mix with any other gear oils.