I spent a lot of money and time to create the the truck of my dreams. I have a Dodge Ram 2500 with HO Cummins diesel. I have a 6 Speed and 4 wheel drive. I spend a lot of time researching the best of fluids for my baby. I use Turbo Diesel Mobil 1 5W40 in the engine, Mobil 1 75W140 in the front and rear end and Mobil 1 ATF in the transfer case. Enough said. I love my truck and Mobil 1. If it is good enough for Porche it is good enough for me. Mark

Love this oil for my Jetta, would recommend it for any TDI owner.