Volvo how do i change the transmission fluid in my 2001 volvo c70

Hello.I'm a mechanic Tech graduated from a real mechanic school years ago and as my teachers had told all of us it is NOT recommended that you change the transmission oil but instead change the filter and put the same transmission oil back due to the friction it made and build up in tinny micro specs of metal in the fluid that helps the mechanic moving parts work better.Please just buy new filter and replaced that instead and I promise you wont regret taking my advice.You can ask any mechanic tech at any auto mechanic shop they will tell you i'm correct!

I changed mine without the filter because i could not find one. i had no problem. the drain was in the bottom.