[bking66]

I'm looking for anyone who has experience or advice on automatic transmission fluid additives.

I have two 1990's, a 535 and 735, that I switched over to Redline ATF after I bought them and both still work ten's of thousands of miles later, but they make increasingly more noise, esp a rumble or vibration when the vehicle is standing still and in drive (but vibration all but disappears when shifted into P or N) and a whirring sound that seems to begin as the vehicle comes to a stop and ends shortly after the vehicle comes to a complete stop. Both transmissions exhibit similar sounds, and now one occasionally hesitates on a shift, second to third. The Bentley has little to say about any maintenance, and my mechanic told me to "pull out both the Tranny and my wallet".

Thanks for your ideas!
BKing