The transmission had 100,000 miles on the OEM fluid. The MKX does get used for towing occasionally so the transmission fluid was past due on fluid change. The fluid used was Motorcraft Mercon LV transmission fluid. The process was drain and refill. Refilling to the hatch marks on the transmission dip stick. Once filled drive around about a mile to mix the fluid and run through the gears and cycle the fluid through the torque converter. Then repeat. Each drain should result in about 4 quarts more or less on each drain. Recommend having at least 14-15 quarts on hand before you begin this process. Again measure at each drain and fill. You can find Motorcraft Mercon LV at your ford dealer or other auto part stores. Fan funding: I work to provide videos on a frequent basis and the garage charges me fees for use and jobs can take several extra hours to accomplish not only the work, but the video recording. The audio video equipment adds to the expense. Please take a moment and consider even one dollar donation toward this channel to assist with the expenses. Thank you in advance. MACTFORDEDGE on Facebook: https://www.facebook.com/groups/MACTFORDEDGE/ Due to factors beyond the control of MACTFORDEDGE, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. MACTFORDEDGE assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. MACTFORDEDGE recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of MACTFORDEDGE, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not MACTFORDEDGE. Music: Musician: Band of one ( Kevin Messner) Song: Wake up (revamped) Song: Track 15 Song: Track 14 Contact: https://www.facebook.com/BaNd-Of-OnE-927722547329537/?fref=ts Title song: Houses Music with permission and courtesy of Jef Spradley. Link to his Youtube channel and more information on how to obtain his music. https://www.youtube.com/channel/UCUnvwZzU48dQNGwn-B6eAuQ