10 Best Transmission Fluid Additives 2025

Looking to keep your transmission running smoothly? Look no further than our top 10 list of transmission fluid additives. We reviewed and scored many products in the transmission additive category, with scores ranging from 7.9 up to an impressive 9.6. Our top rated product comes from the trusted brand, Honda, with their FBA_08200-9008 08200-9008 Automatic Transmission Fluid. This 4 pack of 1 US QT /946 ML bottles will keep your transmission running at its best. Say goodbye to jerky shifting and hello to a smoother ride. Don't settle for a subpar transmission - check out our top 10 list now and see how you can improve your driving experience.