●Provides High performance gear protection and longer synchro life ●Offers quicker shifts, perfect synchronizer coefficient of friction and eliminates notchy shifting, even when cold ●Recommended for GL-1, GL-3 and GL-4 applications, as well as where most special synchromesh fluids are specified. Safe for brass synchros, as it lacks the reactive sulfurs found in most GL-5 oils that cause damage ●Satisfies gear oil viscosity requirements of 75W; 80W; SAE 40 10W40 and 15W40 motor oil ●Excellent for high- and low-mile transmissions and compatible with petroleums and other synthetics