It is som many rumours about this so to explain a bit I opened the manifold. The tube closest to the carburettor only goes to the hole of the pump. the other tube is open into the manifold. I have used biffrent brands of oils. I think any full syntethic for air cooled 2stroke engines will work. Ratio is 30:1.
from 5:30 in this video is my black horse 2.85meter fieseler storch with ngh 38cc
