No matter how hot it gets you should never have oil leaking out and definitely not after only 15 min. I'd take it back to the place that flushed it and tell em to find out whats wrong. Trannies definitely can run hotter than the engine coolant. To give you an idea my tow rig runs around 150 around town, about 180 towing on level ground, and i'll let it get up to about 210 climbing mountains before gettin out of the gas. It'll go a lot hotter than that, and many people let it even with a gauge, but auto trannies are very sensitive to burnt fluid, and I plan on makin this tranny last a nice long time, it was kinda expensive <img src="/forums/images/graemlins/frown.gif" alt="" />

Dallas