IIRC, both times mine was done with a BG exchange machine, I had 20 quarts on hand and they used about 18 or so. The first time at around 150k miles, the line of delineation was very sharp between the old and new fluid. The second time, ~100k later, it was difficult to tell the difference as...
Why would you need a filter on the machine? The transmission does the pumping and the machine is on the input side only with the new fluid. At most you might get some minor contamination from the previous "new" fluid. FWIW, the last shop that did mine let me stand there while they did the...
This. My '97 had 114k on it when I bought it in 2007 (IIRC). I had the transmission fluid changed with Amsoil Universal ATF at some point early on; no cleaning agents, conditioners, etc....just the ATF. Fast forward about 2 years ago and I had the same service done at around 260k and it was...