Any one try the Lucas Transmisson fluid additive in their X-Type automatic transmission?

Their webb site states you can add it with out draining any fluid out! It also states compatible with all transmisson types and fluids.

My transmisson seems ok but a little loud at times. I did try their power steering additive and it made the power steering pump dead quiet.

Any comments?

 

Personally, if I knew my Tranny was dying, I would do it..but if it shifts good and no slippage..I wouldn't