I just had in my 98 Diesel for a new oil pump,,and at the ssame time I let them know of a shifting problem I was having when cold and coming to a stop, the tranny did not shift into 1st gear fast enough.
They found a tranny leak at one of the plugs, and fixed it, although the car had never dripped anything on the ground.
This might have been a kind of false story also, as with the full underpad on the car, you might never see a leak anyways.
So they fixed the leak, but guess what?.... it still does not shift into 1st gear fast enough.......
98 300 DT