I was a bit surprised to find there was no oil in the filter assembly area when removing the filter. Is there no check valve to keep oil in the filter when the engine is turned off?
Obviously having no check valve makes for a clean, easy filter change, but requires a couple of seconds for the oil pressure to build up.
I have always filled oil filters prior to installation on engines where that is possible, e.g., Chevrolet V-8. Of course that is not possible on the subject engine.