I purchased a Volvo 850 turbo wagon with 134000 on the clock. After driving the car for almost 9000 miles and repairing many oil leaks, I decided to start replacing all the cars fluids. I thought the transmission shifted hard at times, so with the fluid exchange, I added a bottle of Lucas trans slip fix. After 150 miles, I could not believe the difference ! SMOOOOOOTH and no hard shifting whatsoever. I wil use Lucas Products anywhere I can in this turbobrick !