The application for an automatic transmission of a passenger car or light truck, is to run the 6 fluid ounces for 1000 miles before purging the old fluid out with new fluid. This will guarantee that all deposits are suspended in the old fluid before purging. It is not advisable to add the 6 fluid ounces and run for 30,000 miles in a transmission that may be dirty. Filtration is somewhat non existent in many automatic transmissions, other than a small magnet. It is not advised to circulate dirty fluid much longer than the recommended 1000 miles. During a normal application while ARX dissolves the oxidized fluid deposits, some gear filings or overdrive clutch wear deposits may be attached to the oil deposits, which will become liberated, as the oil phase is dissolved. If the transmission is spotless clean I would have no problem running ARX in the transmission for much longer than the 1000 miles. But the only way to verify a spotless tranny is to tear down. So in reality I advise that the stock instructions is the way to go. Rich
