usually it tells you on the engine the capacity next to where you fill it, I run 10w30 and I get fram filters for it from walmart. I don't run synthetic. I would just assume change the oil more often. You are going to want to change the rear diff fluid and you will need to by that from Kawi. I don't have the that atv but the Prairie is the same powerplant and drive train. Not sure about zerk fittings mine has none