Review on Honda Automatic Transmission Fluid ATF DW1 by Darin Grosz

Found on Revain as part of a "hot sale". The bottles were identical in appearance and weight (to the gram) to the DW1 bottles purchased from the dealer, so I'm pretty sure they're real. Did a few drains and fills on my 18 RDX 6 speed auto. Improved cold shifting that was "jerky" until the fluid warmed up. Honda typically requires a 35,000 mile fluid change (check the service code) on the DW1 AT. In my experience this is when you will see the drop in performance of the DW1 fluid. YMMV.