Transmission issues: Car got stuck, now seems fine...

[Speedy]

I was towing a somewhat heavy but unladen trailer with my '97 Taurus (clone to your Sable) and it dumped its ATF all over the road. I had it hauled back home and filled it back up with fresh ATF to try to find the leak (ATF all over the the tranny so not easy to spot). I could not find the leak but I assumed it was the front seal. I just drove it expecting it to again belch ATF. It never leaked again in many thousands of miles. I never used it again to tow.