It's not really a hard job -- easier on the T5 than the T6 as you don't need to remove the airbox. Use the Aisin fluid previously mentioned. I do 3 or 4 drain and fills of the system, over filling by about half a quart each time. On the final fill, you must have the car level, running, and monitor the trans oil temperature with VIDA or a OBD scanner until it reaches at least 50C (122F); you then removed the level set plug and allow the fluid to drain until it stops. You do not need a lift -- the job can be done with the car on the ground. Or you can use ramps or stands. Whatever it takes to level it.