Transmission Fluid Change for 2001 Ford Mustang 3.8?

I have 2001 Ford Mustang 6 Cylinders and I need to change the ATF Transmission Fluid.
How many Quart of ATF Fluid are needed for my 2001 Mustang?

Please! I would appreciate for your answer.

Hi it's drain plug is under the gearbox. It does not usually have a dipstick but a oil level hole on one side of the housing. This is where it is filled up with new oil it also acts as a oil level hole so you can't over fill it. So the whole job is a messy underneath the car. So if you are not some one who likes getting dirty and and messed up doing car jobs a Ford dealer is a far better option. He to has gallons of fluid available doing this job all the time. Some use 4 quarts and some use 6 quarts. Depending on engine size and other issues. So you would need a handbook to discover it's quantity.

It takes 13.9 quarts however you probably will only be able to get about half of that out by dropping the pan. The rest will be stuck in the torque converter. I'm not sure if the torque converter has a drain plug or not on this model. If you can drain the torque converter then you can get another 4 or so quarts out, in addition to fluid in the pan. The only way you're going to get the full 13.9 quarts out is if you take the car to a shop that has machine that will pump all the old fluid out of the system and pump new fluid in. Unfortunately most shops that do that, usually don't drop the pan and put a new filter in.