if diy, you can either drain both trans pan and converter, or just drain trans pan twice, with driving 30+ minutes in between. the latter procedure is: drain - fill to correct level - drive 30 minutes - drain - fill to correct level.
if diy, you can either drain both trans pan and converter, or just drain trans pan twice, with driving 30+ minutes in between. the latter procedure is: drain - fill to correct level - drive 30 minutes - drain - fill to correct level.