Was having issues with the transmission grinding and getting extremely hot in my '91 300zx so Nick recommended this product to me. I was sort of skeptical at first but man does this stuff work wonders. Haven't had any grinds or high temps since I changed the old fluid. Definitely recommend this if you're having trans issues.

Words cannot describe how much better this product made the driveability of my car. My tranny was grinding a little on 1 to 2 and 5 to 4th and after putting this in the grinds are gone, the heat is incredibly less, and it's just overall much much smoother. This will be the single best $50 purchase you can make for your Z, and will increase your enjoyment of the car tenfold. Highly recommend!