Originally Posted by tnjeep
I would suggest not doing the flush, have had a few vehicles in our fleet at work with trannys that went out after a flush. Best to just drop the transmission fluid and change the filter even though you can only really drop about a third of the fluid, the rest stays in the transmission.
What's the whole story there?
Did the trucks at your work have high mileage? Were their transmissions ever serviced regularly?
A transmission that is serviced regularly or in a relatively new vehicle should not have to worry about doing a full fluid evacuation and refill.