High-tech synthetic-based lubricant for gearboxes and axles. Formulated based on a TDL (Total Drive Line) concept, which allows the same product to be used in gearboxes and axles: (GL-4 and GL-5 compliant product) without any risk of corrosion, in particular of synchromeshes. These additives are able to maintain their protective power against phenomena of teeth chipping, seizing and wear, thereby extending component service life. It features good high temperature resistance with no risk of oxidation or deposits (leaving the gears very clean).