Quality fluid MFGs, the world over, produce ATFs for intended applications. The transmission and automotive MFGs spend significant effort developing the technology and test for durability and reliability. Yes? Does this make sense?
How many of these MFGs recommended "fixing" or "enhancing" the fluid with additives? Why spend all the time and effort to make a "defective" or sub-par fluid?
If you want to enhance your transmission to last longer invest in better filtering or thermal control. High performance fluids are also available from numerous MFGs. Additives just don't make any sense unless you are susceptible to marketing or happen to be in an extremely unique situation.
i have more than enough cooling (tru-cool 40k and mag hytec deep pan) arguably the best fluid for it from HPL (blue atf) and a OG Fram titanium FS8a in the cooler circuit for filtration.
my accord (2005) has HPL green ATF, added external 8 row cooler and a OG Fram Ultra XG8a in the cooler circuit.
wife’s accord (2003) has honda DW1 fluid, 8 row external cooler and a carquest premium fram xg8a sized filter in the cooler circuit.
all three of my vehicles have lubeguard red in them. again, it is advocated for by shops and infact my transmission guy. there are numerous success stories on here and on transmissions i’ve serviced. many 6l80’s have gone from zero movement to fully functional after a fluid exchange, new filter and lubeguard red.
manufacturers also recommend life time fluids, too thin of oils to meet cafe etc. are you going to tell me automakers have longevity in mind when they are in the business of selling you new vehicles?
does it make sense that many 10speed transmissions from gm/ford fail prematurely? great effort in design. i guess failing early is a feature. or the 6.2L L87 blowing up? how about 3.5ecoboost timing chains, Chrystler and the oil cooler on the pentastar, GM with the 4l60, need i go on?