jack the car up, secure it with jack stands or something sturdy, then 1st loosen the fill hole on the right side of the transmission, you use a regular 3/8 inch ratchet. then loosen and remove the drain plug below it. make sure the fill hole comes loose first, so you can re fill it. sometimes they strip out, so go easy when u tighten them, snug is enough. i'm using the amsoil synthetic fluid in my t-5-z and love it.
good luck
nick