I want to make sure the benefits outweigh the risk. And by risk I mean the possibility of losing the warranty due to a non-OEM fluid when BMW pays for service. Comments welcome.
How would they ever know? Unless they test the fluid... If RL or RP indeed produce a smoother tranny as some have commented, I'd be real interested in using that.
Mine is back to being notchy again and maybe a bit more so than pre-1200mi service. It was nice for a week though, I think they under filled mine.