#1 is recommended by Kitfox for the plastic bearings like the flaperon bearings, rudder pedals, and possibly some others. I found it is available in a non-aerosol spray bottle (1 qt?) that it can be transferred from into smaller containers if you wish. The Tri-iFlow is also available in non-aerosol bottles. I think I bought it on Amazon, Jim. Shake well before partitioning it out into other containers and before use.