Anyone have any experience with Auto-RX, Lucas Transmission Treatment, or similar miracle cure, last resort transmission treatments? I don't need them now, but I am just getting such last-resort type products lined up with regard to any future used vehicle purchases. Sometimes is can help save the high cost of having to pay someone to tow a recently purchased vehicle back home, especially if the transmission is supposedly shifting but not shifting into 3rd or 4th gear or something.

I also could have sworn there was another similar last-resort type transmission fixer type product posted here on this site recently, but after going through all the archives, I can't find find it.

Thanks in advance for any thoughts/comments.....