Hi

Ive recently bought a King Quad 250cc (year model 87)
The previous owner mentioned the front differential was in need of new oil. It's not that it doesnt run as intended or anything, quite the opposite. I think it's an extreme tool, working in the forest is alot easier as it both transports me and my equipment, aswell as being able to pull logs. Though as it didnt come with a repair manual, and it's the first atv I own, can anyone tell me what kind of oil is best to put in the front differential? I'm thinking gearoil myself, like transway 90 or so. But if anyone knows for sure, I would appreciate any input.

Bjørn