TRIAX DTF Professional is a full synthetic PAO / Ester based drive train and active transfer case fluid designed for a wide range of vehicles, such as BMW, Audi, Porsche, VW and many others. This fluid is designed to exceed the performance requirements of factory fluids as well as virtually all after-market transfer case fluid. TRIAX DTF Professional is built to be extremely long lasting, with highly stable viscosity improvers, optimal additive balance and extremely oxidation stable.