My daughter has a 2002 Ford Taurus with 108,000 miles (formerly owned by salesman friend who maintained auto regularly). Tranny started leaking, then car started "galloping" between 60-65 mph. By galloping, it is almost like lightly putting your foot on and off gas pedal. This only happens at 60-65. A mechanic has suggested replacing the motor mounts and transmission seal and/or pan (not quite sure on this). ANY HELP ON THIS WOULD BE REALLY APPRECIATED. THANKS FOR THIS FORUM.