You will only get about 5 maybe 6 quarts out as the converter and cooler will still retain fluid. But always have more on hand in case you spill a bottle or 2 as pumping fluid UP into a tranny is a very messy job. Best way to get all the fluid out is to have it flushed and if you add the inline filter after you do this change, you will never have to drop the pan again - only drain and fill and replace this simple inline filter.