ATP Automotive AT-205 Re-Seal Stops Leaks, 8 Ounce Bottle (2 Pack)

Have a 2004 Toyota Tundra DC Limited with roughly 275,000 miles thats about to get its third timing belt and water replacement. Always had this small leak underneath by the shaft seal and had it done twice, by a Toyota dealership and but was never fixed right and always have that suspended drop of transmission fluid along with fluid stains on my driveway.Along this ATP Reseal came and while it did not completely take care of the problem (still have that minute suspended drop), it did way better that the stealership and cost nowhere near what they charge. Poured in 2 bottle as my vehicle has 11 quarts of dry capacity to be treated. I even degreased my garage just to be sure and it certainly did work. The only downside that I can think of, but just a theory of mine, is how it may change the transmissions fluids chemical composition to hopefully not affect the transmission itself? Did it do what it claimed to do, IT SURE DID and took care of the leak!