I replaced the transmission mount. I have been using the less expensive Dex/Merc Transmission Fluid. Has been popping out of Gear for a while now but I always thought that was due to lack of transmission fluid. I have problem with transmission leaking at pan. The popping out of gear is getting worse. Motor running fine but huge vibration when in Drive or 1, or 2. Does a little better while driving but something not right. I do not notice any problems in R Have truck parked but is only transportation, and Job resource please help, thanks