Description A concentrated friction modifier specifically designed to eliminate torque converter shudder problems instantly, made from synthetic materials and synthetic esters and concentrated five times. LUBEGARD's Instant Shudder Fixx™ is packaged in a uniquely designed two-ounce applicator tube and is compatible with conventional or synthetic automatic transmission fluids. Benefits: A concentrated friction modifier specifically designed to instantly eliminate torque converter lock-up shudder. Provides up to 4 times less wear than regular ATF. The original shudder fix.