It is not an additive, but is the best performance ATF available, Designed to work with all automatic transmissions when a firmer shift is desired, It is the easiest way to measurably improve the transmission performance of your vehicle, This Trick Shift auto transmission fluid was originally developed by B&M for racing applications, Made up of a scientific blend of foam inhibitors, pressure agents and shift modifiers that will provide extended transmission life and drastically improved shift feel.
