Non detergent oils are no big deal in a hobby engine. I dont have the number handy, but I run the straight 30WT "not for street use" VR1. It costs me like $8/qt, and has zink over 1300ppm iirc.

Well, art is art, isn't it? Still, on the other hand, water is water! And east is east and west is west and if you take cranberries and stew them like applesauce they taste much more like prunes than rhubarb does. Now, uh... Now you tell me what you know.