I would change the ATF in the Accord. I beleive that Honda recommends chaning the ATF at 90K miles or 72 months for normal conditions. For severe conditions every 30K or 2 years.
Honda recommends only using thier Fluids. There is much debate on this and you can do a search about what is the best to use. I thought about using different fluids and posted a few times, but I have heard some bad things about not using Hondas TF's. So I use Honda MTF in the Accord and Honda ATF in the CRV.
I dont know anything about additives and most Honda literature suggests not using them.
Good Luck!
Honda recommends only using thier Fluids. There is much debate on this and you can do a search about what is the best to use. I thought about using different fluids and posted a few times, but I have heard some bad things about not using Hondas TF's. So I use Honda MTF in the Accord and Honda ATF in the CRV.
I dont know anything about additives and most Honda literature suggests not using them.
Good Luck!