About this itemSMOOTHER SHIFTING & IMPROVED DRIVING COMFORT: Formulated to enhance synchronizer performance, delivering smoother, more precise gear engagement while reducing notchiness and resistance during shifting in manual transmissions.OPTIMIZED FOR MODERN MANUAL GEARBOXES (GL-4): Designed for transmissions requiring API GL-4 specifications, providing the ideal balance of protection and friction performance for synchronized gear systems.ENHANCED WEAR PROTECTION & COMPONENT LIFE: Advanced Technosynthese formula reduces friction and protects gears, bearings, and synchronizers from wear, helping extend transmission life under daily and demanding conditions.