At last my garage got around to get the oil changed and mounting an extra cooler on my V6 CDTi....
Is has now run 105.000miles and the transmission fluid was black. But not any water or anything in it though. I don´t think it have ever been changed before.
The cooler is 35cm wide 20cm high and 2 cm thick. The cooler (Black thing ) is placed in front of the AC cooler.
The gearshifts are much smoother and you can feel the car running better.
The garage who carried out the work are specialist in autobox´s and GM car in general. So no worries there..