Sometimes the Seafoam tranny additive works so it doesn't hurt to try it. However, in most cases it is just a bandaid fix and the problem may reoccur. Also, it dilutes the ATF and you may develop other issues. If you do another pan drop you'll see your ATF will be very dark since the Seafoam did it's job so I would not run with it too long. Pic shows fluid drained from a '98 Lesabre with 140K miles that ran Seafoam for about two weeks. The ATF looked fine before that.
