What kind of gear oil is used in a 1995 Yamaha Kodiak?

For a 1995 Yamaha Kodiak, you should use gear oil that meets the specifications of API GL-4, typically with a viscosity of 80W-90. It's important to avoid GL-5 gear oils, as they can be incompatible with the materials used in older transmissions. Always consult the owner's manual for specific recommendations and ensure that the oil is suitable for the operating conditions.