2017-2018 F-150/Raptor and 2018 Expedition/Navigator/Mustang vehicles equipped with a 10R80 automatic transmission require a new automatic transmission fluid, MERCONù Ultra Low Viscosity (ULV). It is important to positively identify the transmission and service with the correct fluid. Use only Motorcraft MERCONù ULV Automatic Transmission Fluid XT-12-QULV (WSS-M2C949-A) or equivalent when servicing a 10R80 automatic transmission. Using improper transmission fluid may result in internal transmission damage. For any further questions regarding the 10R80 transmission or fluid specification for 2017-2018 F-150 or 2018 Expedition/Mustang/Navigator Refer to WSM Section 307-01 - Specifications.
