I have a Honda Accord with a pretty bad flare 1-2 and a bad flare 2-3. Everyone says to use Honda atf or the transmission will be ruined. Honda uses a highly friction modified fluid. One day I decided I'm not going to believe the only use Honda atf story. I started to experiment with different atf. First it was amsoil which actually worked surprisingly good. Then I tried Castrol transmax import. This did not work as good as amsoil. Then I tried Dex 6 which I think worked better than the Castrol. I did alot of reading about transmission additives. I read about the seal swelling capabilities but it seemed if you left the additive In it would eventually swell the seal to much and ruin the seals. I first tried lubegard red and it either had no effect or made the transmission worse. So I decided I would flush the trans with seafoam transtune. It says on the bottle not to leave it in to long I think for only 250 miles or something. When I poured it in the transmission immediately was so so much better. I left it in for the 250 miles and changed the fluid again and the transmission got worse again. At this point I decided if the transmission lived through all these different fluids I was going to really experiment. I currently have a mix of dexron 6, type f, and a bottle of seafoam in it. It has been using this fluid for 50,000 miles and the trans still doesn't shift perfect but it's much much better than it was and it has not gotten any worse. I say you should go for it. Unless a fluid has seal compatibility issues I don't see how it can immediately harm the transmission. You will be able to tell if the different fluid helped. Also my fluid is still pretty red atfer 50k even with the seafoam in it the whole time. By far the product that made the biggest difference was the seafoam transtune. It was an immediate fix.