MIKEMOL--- In item #6 of the instructions, it says to continue to add fresh AT fluid until it overflows out of the fill hole, which at that point the fluid level will be at the full mark. Just make damn sure your vehicle is on "level ground" (very important).

If you want to see what color the old/existing AT fluid is you have two(2) options:

A: Loosen the drain plug and slowly dribble some old AT fluid into a catch-can (coffee-can). This method might be kinda' messy with over-spatter.

B: For a less messy method (although a bit more time-consuming and tedious); you can get a "Syringe-Pump" from an Auto Parts Store which has a long narrow tube attached to it for sucking up fluids (also known as a manual "Oil Pump" for extracting oil from dipstick tubes). Put the long narrow tube into the fill hole and manually pump out a small sample of old AT fluid into a catch-can (coffee-can). Note: It is possible to "pump-out" the entire fluid contents with the Syringe-Pump without ever having to use the drain hole, thereby keeping the drain hole gasket unmolested (if you so desire).