I just did my transmission fluid change.. last month.. it really makes a difference.. my car runs like the first day i bought it! The fluid in the torque converter was really dirty, its not a cheap service.. each 1 litre sythentic transmission fluid cost $20 canadian each.. you need 7 1/2 litres.. and you need more fluid to flush the converter.. than you have to add a magnet to the pan $3 canadian, and new filter ($12 canadian).. and replace the allen drain bolt with washer. I recommend you to do it if you are like me and plan to keep the car for a long time.