Maximize gear performance and durability with the Ultra1Plus SAE 75W-90 Synthetic Gear Oil Bundle, featuring a 1-gallon (4 quarts) jug and a bonus 1-quart bottle of premium API GL-5 lubricant. Engineered with synthetic base oils and advanced extreme pressure (EP) additives, this gear oil delivers superior protection for hypoid gears in severe-duty conditions—perfect for motorcycle shaft drives, automotive differentials, and heavy equipment. Offering exceptional thermal stability, shear resistance, and anti-scuffing properties, Ultra1Plus 75W-90 ensures smooth operation across all seasons, from cold starts to high-torque workloads. The gallon size is ideal for bulk maintenance of multiple vehicles or large systems, while the included quart bottle provides convenience for quick top-offs or single-service needs. Exceeding API GL-5 and MT-1 standards, this bundle is your go-to solution for extending gear life and reducing downtime in motorcycles, trucks, and off-road machinery.