Gearbox Oil 80W90 GL4/ GL-5 1 Liter

MOTUL USA Gearbox Oil 80W90 GL-4/GL-5 is a conventional mineral gear lubricant formulated to protect manual transmissions, differentials, and transfer cases across a broad range of vehicle platforms and operating conditions. The 1-liter bottle format offers convenient single-unit sizing for top-ups, maintenance intervals, or field application where portable supply is essential.

The 80W90 viscosity rating meets both GL-4 and GL-5 performance standards, covering applications where either specification is called for in owner's manuals. The 80W designation ensures pumpability and film strength at cold startup, while the 90 grade maintains sufficient viscosity at operating temperature to protect hypoid gearsets under load. This dual-specification approach eliminates the need to stock separate products for vehicles with different requirement designations, reducing inventory complexity for fleet maintenance and field operations.

Conventional formulations like this are standard-duty offerings suited to moderate-duty manual gearboxes, older transfer cases, and light-to-medium off-road or towing scenarios where synthetic performance upgrades are not mandated by manufacturer specification. Technicians, fleet operators, and vehicle owners working on trucks, 4x4s, classic vehicles, and military surplus equipment rely on proven conventional gear oils for predictable performance without premium cost. The compact 1-liter size fits standard storage racks and tool boxes, making it practical for maintenance kits, emergency top-ups, or single-vehicle service.