Transmission oil is a specialized lubricant engineered to maintain the performance and longevity of automotive transmissions, both automatic and manual. Located within the transmission housing, this fluid provides critical lubrication for gears, bearings, and other internal components, reducing friction and wear. It also serves as a hydraulic fluid in automatic transmissions, facilitating smooth gear changes through torque converter operation and valve body actuation. Proper fluid viscosity and friction characteristics are vital for efficient power transfer and consistent shifting. This assortment includes fluids formulated for various transmission types and manufacturers, such as ZF transmission oil like MPN 0671-090-384, 0671-090-385, and S671-090-255, ensuring compatibility and optimal performance in passenger cars and commercial vehicles. Regularly replacing transmission oil, as per the vehicle manufacturer's recommendations, is essential for preventing costly repairs.