5 LTR Wet Brake Oil is also known as wet brake fluid or wet brake hydraulic oil, is a specialized lubricant used in wet brake systems. Wet brakes are commonly found in heavy duty equipment such as tractors, construction machinery, and off-road vehicles. These systems incorporate oil-immersed brakes where the brake components are constantly in contact with the oil to dissipate heat and maintain optimal performance. Wet brake oil is designed to provide lubrication, cooling, and protection for the brake system. 5 LTR Wet Brake Oil is designed to provide lubrication, cooling, and protection for the brake system.