Just to let you know, I used Auto-RX for +4,500 miles in mine, because I was using it in conjunction with Amsoil ATF (Frank even recommended extending to 2,000 miles).
I flushed the fluid last weekend with the newer Amsoil ATF (Dexron VI/Mercon SP recommended spec). I flushed through two gallons of Super Tech DexronIII/Mercon to help dilute the debris and left over fluid. I then flushed through 3 gallons of Amsoil ATF and had to add 3.5 more to bring it to full. 15.5 quarts of Amsoil ATF were used.
I'm installing an inline filter (B&M) so I'll end up adding about another quart of ATF. Look for pictures in the filter section, hopefully this will be within the next weekend or so.
After I'm done with the engine cleaning, I'll post a full (engine, transmission, power steering) Auto-RX review, so that should be posted later in the year.