*SAE 80W/90 GL-4 is a type of gear oil that is commonly used in manual transmissions and differentials.
*It is a multi-grade oil, which means that it has a wide viscosity range. This allows it to flow easily at low temperatures and maintain a consistent viscosity at high temperatures.
*The GL-4 rating indicates that this gear oil is designed for moderate-duty applications, such as passenger cars and light trucks.
*It is important to use the correct type of gear oil in a manual transmission, as the wrong type of oil can damage the gears.
