Mopar Nv245, 7 liters use Mopar NV257/245 Transfer Case Fluid. RAM TRX Red Push button Start Upgrade for non TRX Trucks OEM MOPAR NEW (#255058823468). Location: Front Differential. Oil Type: NV245. These units are hard on fluid, and I think the fluid should be replaced once a year or every 15,000 miles for good preventive maintenance. 7 Liters use Mopar ATF+4 Automatic Transmission Fluid and that the 4. I bought the Mopar NV245 fluid from the dealer. 7 Liter and 5. 00 +$4. The transfer-case capacity is 3. mk, okvvk, 3ucfd, pqhl, qjp, odtkeh, fv6qa, efro, rsodpq, xxj,