ok let me clarify:
Both are acceptable methods that can be used.
The ATF: dont drive around too much w/ it in your crankcase, as the added ATF will create an overfill condition, this is only ok during idle or gentle/short driving.The seafoam is less stuff and will evaporate out of your oil in a week..but wont work much on sludge.
Both methods are gentler and safer alternatives to the strong 5 minute Kerosene based flushes.
Fred..
