Trick Shift was originally developed by B&M for racing applications. It's become so successful that it'sthe most popular high performance fluid on the street also! Not an additive, this is the best performance ATF available! A scientific blend of foam inhibitors, pressure agents and shift modifiers that will provide extended transmission life anddrastically improved shift feel. Trick Shift is the easiest way to measurably improve the transmission performance of your vehicle. Trick Shift works with all automatic transmissions when afirmer shift is desired. Pour in Performance is not just a catchy phrase - it's reality! It can be mixed with stock-type transmission fluids, however to attain maximum improvement you shoulduse Trick Shift exclusively. Ideal for towing, light trucksand RV applications as well asracing. Not recommended for electronic controlled transmissions.