We have a local ACE hardware that carries some Stihl and Honda equipment along with some mower oils and batteries. They have the Kawasaki 10w40 and 20w50, as well as the Honda 5w30 and 10w30. Most of the time the oil is priced pretty high, but occasionally I'll go in there and grab some Honda 10w30 that is marked down to $4 a quart.There's a sweet young thing that works at the mower shop that hooks me up.