Hey folks, I recently bought a gn250 and was doing a bit of maintenance. I've never had to buy motor oil for a bike before so I went to supercheap and picked up some of this, It's a 4 stroke 10w-40 oil. On the filler cap it has 10w-40 on it so I know it's the right viscosity(?) but it says for high performance bikes.. The gn250 is definitely not that. What sorta oil should I get?