Helps fluid systems work smoother and last longer. Safe in most types of automatic transmission fluid, hydraulics, or power steering fluid systems. Safe for conventional and synthetic fluids. Dissolves and liquefies harmful gum and varnish buildup in fluid Cleans and lubricates valve bodies, shift actuators and solenoids. Helps to control moisture in fluid. Will not swell seals or harm gaskets, O-rings, or clutch material Every petroleum fluid system is prone to erratic and rough performance caused by gum, varnish, and moisture. Trans Tune works fast to dissolve harmful deposits and control the moisture that impairs fluid systems. Safe and effective when used in most types of automatic transmissions, hydraulics, or power steering fluid systems.