I wanted to tell you about the experience I’ve had with the RVS transmission additive in my 2010 tundra. I had a pretty bad torque converter shutter and after a transmission service it was still there and we re-serviced it after 2500 miles and added RVS. I have not had a single shutter in the transmission since then! The mechanic that did it is absolutely amazed he was convinced I was soon to be replacing or rebuilding my transmission.