One of the simple $3.99 or $6.99 hand bulb siphon pumps shown here should work, or can be rigged up to work, if a smaller tube is needed down the dip stick tube. I have used the $3.99 type to empty my power steering reservoir which has ATF+4 in it. Works well. You can pump the gas out of your Neighbour's car with it as well, if times get too rough.
Originally Posted by rastoma
The oil drain plug is fairly simple once one determines where the best installation point is. Here's one such kit using a washer seal similar to what is used on your oil drain plug (it has a washer to prevent leaks).
If you get 50% old fluid out with first change, then you will have 50% remaining, next change will have 25% old fluid remaining, and so on, looking like this: 50%, 25%, 12.5%, 6.25%, 3.125%, 1.5625%. So, at the end of the run, you have less than 2% old fluid remaining after 6 drains/refills. 4 or 5 drains/refills should give you lots of comfort considering that the average transmission probably doesn't get that over its lifetime.
2007 GC SXT - Magnesium - S&G - 3.8L - 145,500 kms
2002 GC Sport - Stone White - 3.3L - 328,350 kms
2003 Jeep TJ Sport - 4.0L - 258,980 kms