I wouldn't power flush it since it has higher mileage. I would change it though. I used mobil1 ATF ($60 worth) you need atleast 12 quarts doing it the following way:1. drain fluid. 2.fill with 4qts. 3. start car run through gears a few times. 4.repeat number 1-3. 5.repeat 1-3.
or you can remove the correct lines off the radiator and put one in clean bucket of new fluid and one into old bucket, turn on the car and the fluid will change itself.
