Not sure on the TC but for the Evos there is a hose coming off the back of the oil tank and clamped to the bottom frame rail just behind the transmission on the exhaust side.
Squat down looking at the right passenger footpeg. Find the part of the frame just behind there as it curves down to the bottom. It is just under there - an 11/16 nut I believe.
Just flip the bike over and pour the oil out of the tank. Gets on the seat sometimes so be careful.
you turned it the wrong way!!!
You're killin' me!!!
there is a wealth of info on anything and everything in the tech and do it yerself sections of this board...cut, copy, paste, save,...it's worth it...not to mention the skin pics in the showdown forum