Good choice on fuel/oil content (I think) . I use Auto Transmission fluid for after run/storage, tip the nose up and rotate the prop as well as down doing the same, this covers the bearings fully. Drain the tank each time and join both the pressure line and fuel line between them with a piece of tubing, this seals the tank from everything including moisture and evaporation of the light ends of the remaining fuel(always some lift in the tank).