Description TREMEC Hi-Performance Manual Transmission Fluid is approved by TREMEC for all TREMEC Transmissions. TKX, TKO, Magnum T-56 and T5 5-speeds take 3.2 quarts and 6-speeds take 4 quarts. Recommended for motor vehicles with manual gearboxes that require GL4 75W85 MTF, synchromesh, or DEXRON®-III/MERCON® fluids. Not recommended for automatic transmissions or hypoid gear differentials.   Improved load carrying capabilities at all temperature Stable viscosity Designed to work with Magnum, TKO, TKX and T-5 TREMEC transmissions Provides good shift performance in cold temperatures Compatible with yellow metals and carbon lined synchronizer materials Improved dynamic seals performance and reduces leaks Excellent wear protection at high temperatures