Did this yesterday for my daughter's 99 Ford Ranger, at the engine oil change. It consistently gets out 3 quarts of a total of about 10 quarts.
On a 94 Camaro, I only get out 2 quarts.
Easy enough to do, that I do it at each oil change. I think I'll drop the pan next time on the Jeep Liberty and see what kind of paste buildup there is. The fluid on the dipstick stays like new with this program.
On our company van, a 1997 Savana diesel with a 4L80E tranny, I get 3 1/4 litres (about 3 1/2 qts) when I undo the drain plug. I do this every oil change at 5K mi intervals and only drop the pan at 50K mi intervals. I do not even use synthetic ATF. The van now has 390K kms(about 250K mi), about 95% of it city stop n go driving and the tranny still works perfectly. It has never had a flush. I have considered disconnecting the tranny cooler lines to do a flush and also switch to synthetic ATF but why mess with success, I am going to keep doing what I am doing now.
I don't know what an extractor is, but recently I pumped out the transmission fluid from my '96 Buick Park Avenue with a peristaltic pump I borrowed form the winery. It is a positive displacement pump, and, although slow, does a good job of pumping it nearly all out.
THEN when I dropped the pan and changed the filter I put in an aftermarket transmission drain plug. It was a Dorman 1/2" transmission drain plug kit, # 65241. Got it at Advanced Auto for about 1.98. NOW I won't have to mess around with the messy draining of the pan to change out some of the fluid!