I'm getting some conflicting opinions from mechanics on whether or not a transmission flush is advised on my '96 Cherokee Sport 4.0 4WD auto. It would seem some places won't touch a vehicles tranny after 100K miles (Sears Auto Center). It has 135,000 miles, I purchased the vehicle at 94K and immediately changed all the fluids (including the tranny). All the service had been done prior to my purchase. Is this advised or should I leave it alone? She runs fine right now but I want to make this vehicle go over 200K if possible and would like to stick to regular maintenance. Any help would be appreciated.