Find the correct Transmission Fluid you need when servicing the transmission in your 1994-1998 Dodge 5.9L Diesel. By decreasing heat that can lead to premature wear, these fluids can help to extend the service life of the transmission. Using a high-quality fluid helps to prevent the formation of corrosion, rust, and foam while offering smooth gear changes. XDP carries high quality fluids from Sun Coast Converters, Royal Purple, Hot Shot's Secret, and Lucas Oil.