What oil ges in a countax gearbox?

In a tractor gearbox, the recommended oil is typically a high-quality gear oil, often with specifications like API GL-4 or GL-5. The viscosity grade can vary, commonly ranging from SAE 80W-90 to 85W-140, depending on the manufacturer's guidelines and operating conditions. It's essential to refer to the equipment's owner's manual for the specific oil recommendations to ensure optimal performance and protection.