where is the fill plug on 2009 kia rio standard transmission?

Here you go, here is all the info you need to do a complete drain and fill on your manual trans: http://www.kia-forums.com/2g-2006-2010-rio-rio5/84704-rio-manual-transmission-flush-guide.html

Fast answer: 19mm large black bolt next to clutch fluid line bolt.

Mine is not there built 11/08

See that sensor at top of last pic, unplug, than 15/16" deep socket, comes out fairly easy. I just filled mine threw there tonight

I was wondering what this sensor was, I have been looking for days on what this was. I thought it was apart of the speed sensor, but nope. Whew. Nice mention of socket size. I believe that is also considered 24mm as well. Kia Rio 5, 2009 is my car and these pictures are bang on to that model. Not so much the same for the Kia Sedan 2008 or Hyundai 2007.