140 Grade Gear Oil refers to a specific viscosity rating for gear oils. Gear oils are lubricants designed for use in different types of gear systems, such as manual transmissions, differentials, and industrial gearboxes. The viscosity grade of gear oil indicates its resistance to flow under specific temperature conditions. The higher the viscosity grade, the thicker the oil. This is typically used in heavy-duty applications where high loads, high temperatures, or extreme conditions are present. It is commonly found in heavy equipment, off-road vehicles, and industrial machinery. 140 Grade Gear Oil provides adequate lubrication and protection for gears operating under heavy loads and in harsh environments.