Get the Transmission Fluid you need for your 2007.5-2018 Dodge Ram 6.7L Diesel. Most quality fluids are designed to includes foam, rust, and corrosion inhibitors, while providing smooth shifting. By decreasing heat that can lead to premature wear, these fluids can help to extend the service life of the transmission. XDP offers products from Lucas Oil, Royal Purple, Hot Shot's Secret and Sun Coast Converters among other top brands.