If you aren't draining the converter put is about 4 quarts and then warm up and check in Neutral. fill to full line. But if you aren't draining the converter you are wasting your money to just drop and drain the pan and change filter. There is a big quantity of contaminated fluid left in the converter. At least spin the converter to check if it has a drain and if so drain the fluid too. Won't get all the gunk out but better than nothing.