My car is need of a transmission fluid/filter change according to the serivce guides...but have had no problems regarding the transmission what-so-ever.

There is shop that I go to that can change the entire fluid fluid and refill with the same amount without changing the filter.

Basically it attaches on one end...sucks the entire fluid out and replaces it with the same amount.

Should I do this or drain the fluid, change the filter, and refill?

-Ren