Transmission fluid flush
I recently had my transmission fluid service done at the dealership, and they apparently connect it to a machine a flush the fluid. My previous car was really old, and they always use to remove the pan and change the filter and fluid. What is the deal with this new service? They make it out to be the best method on the market. Who is this best for??? They leave the old filter in the case, never drop the pan, and change out the fluid with a long hose. Is this OK?? I am out of date and old school perhaps, but I thought they had to change the filter.
It seems that even my local transmission shop that has been in town forever is even pushing the flush/change system. Can someone explain how this machine works? I plan to own my Colorado for a long time, so I don't know if there is a point where I should ask them to change the filter. It sounds to me that they will never change the filter or drop the pan as long as they have this machine.
Any advice helpful. I want to trust this machine, but not at the cost of longevity. Should I be requesting that the filter be changed at intervals. I own a 06 with the I5 engine and automatic transmission.